521

521 - natural number. Article “521” in Japanese Wikipedia has 2.8 points for quality (as of July 1, 2026). The article contains 0 references and 3 sections.

This article has the best quality in Swedish Wikipedia. However, the most popular language version of this article is Chinese.

Since the creation of article “521”, its content was written by 8 registered users of Japanese Wikipedia and edited by 48 registered Wikipedia users in all languages.

The article is cited 34 times in Japanese Wikipedia and cited 5611 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Japanese): #24318 in July 2016
• Global: #232831 in October 2012

The highest popularity rank from 2008:

• Local (Japanese): #128441 in April 2020
• Global: #946510 in May 2024

There are 11 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	Swedish (sv) 521 (tal)		25.7395
2	Uzbek (uz) 521 (son)		25.2434
3	Korean (ko) 521		17.2658
4	Chinese (zh) 521		13.7548
5	Czech (cs) 521 (číslo)		5.0629
6	Italian (it) 521 (numero)		3.7676
7	Japanese (ja) 521		2.7922
8	Urdu (ur) 521 (عدد)		1.6288
9	Hungarian (hu) 521 (szám)		1.4149
10	Vietnamese (vi) 521 (số)		1.0648

More...

The following table shows the most popular language versions of the article.

The most popular language versions of the article "521" in all the time

#	Language	Popularity award	Relative popularity
1	Chinese (zh) 521		20 597
2	Japanese (ja) 521		18 828
3	Korean (ko) 521		6 323
4	Italian (it) 521 (numero)		4 029
5	Hungarian (hu) 521 (szám)		1 707
6	Urdu (ur) 521 (عدد)		938
7	Vietnamese (vi) 521 (số)		826
8	Czech (cs) 521 (číslo)		770
9	Malay (ms) 521 (nombor)		650
10	Swedish (sv) 521 (tal)		455

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "521" in June 2026

#	Language	Popularity award	Relative popularity
1	Chinese (zh) 521		131
2	Japanese (ja) 521		40
3	Korean (ko) 521		14
4	Italian (it) 521 (numero)		10
5	Swedish (sv) 521 (tal)		9
6	Hungarian (hu) 521 (szám)		8
7	Czech (cs) 521 (číslo)		6
8	Urdu (ur) 521 (عدد)		3
9	Uzbek (uz) 521 (son)		3
10	Vietnamese (vi) 521 (số)		3

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "521" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	Chinese (zh) 521		9
2	Italian (it) 521 (numero)		8
3	Japanese (ja) 521		8
4	Vietnamese (vi) 521 (số)		5
5	Hungarian (hu) 521 (szám)		4
6	Korean (ko) 521		4
7	Uzbek (uz) 521 (son)		3
8	Czech (cs) 521 (číslo)		2
9	Malay (ms) 521 (nombor)		2
10	Urdu (ur) 521 (عدد)		2

More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "521" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	Czech (cs) 521 (číslo)		0
2	Hungarian (hu) 521 (szám)		0
3	Italian (it) 521 (numero)		0
4	Japanese (ja) 521		0
5	Korean (ko) 521		0
6	Malay (ms) 521 (nombor)		0
7	Swedish (sv) 521 (tal)		0
8	Urdu (ur) 521 (عدد)		0
9	Uzbek (uz) 521 (son)		0
10	Vietnamese (vi) 521 (số)		0

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The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "521" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	Urdu (ur) 521 (عدد)		3 543
2	Uzbek (uz) 521 (son)		911
3	Vietnamese (vi) 521 (số)		598
4	Hungarian (hu) 521 (szám)		231
5	Swedish (sv) 521 (tal)		160
6	Czech (cs) 521 (číslo)		102
7	Japanese (ja) 521		34
8	Korean (ko) 521		11
9	Chinese (zh) 521		10
10	Italian (it) 521 (numero)		8

More...

#	Language	Value
cs	Czech 521 (číslo)
hu	Hungarian 521 (szám)
it	Italian 521 (numero)
ja	Japanese 521
ko	Korean 521
ms	Malay 521 (nombor)
sv	Swedish 521 (tal)
ur	Urdu 521 (عدد)
uz	Uzbek 521 (son)
vi	Vietnamese 521 (số)
zh	Chinese 521

Best Rank

Japanese: #128441 04.2020

Global: #946510 05.2024

Best Rank

Japanese: #24318 07.2016

Global: #232831 10.2012

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In Japanese Wikipedia the most popular articles on that day were: 橋本愛 (1996年生), 超ときめき♡宣伝部, 塩貝健人, 鈴木彩艶, 泉里香, 谷口彰悟, 田中みな実, 佐野海舟, アーリング・ハーランド, 後藤輝樹.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information