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81

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EntityQ712876· pop 78· linked from 435 articles

Also known as eighty one, eighty-one

natural number

AI overview

81 is a natural number that comes after 80 and before 82. It is notable because it equals 3 to the fourth power (3⁴) and is also a perfect square (9 × 9).

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Show 4 more facts
code
10000
Commons category
81 (number)
numeric value
81
number of decimal digits
2
Sources (1)

via Wikidata · CC0

~2 min read

Article

← 80 81 82 83 84 85 86 87 88 89 → List of numbers Integers

← 0 10 20 30 40 50 60 70 80 90 →

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