81 (number)
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The Simple English Wiktionary has a definition for: eighty-one. |
This article is about the number eighty-one. For the year, see 81.
Eighty-one is a number. It comes between eighty and eighty-two, and is an odd number. It is also a square number.
[change] Factors
81 has 5 factors:
- 1 (1 multiplied by 81 equals 81)
- 3 (3 multiplied by 27 equals 81)
- 9 (9 multiplied by 9 equals 81)
- 27 (27 multiplied by 3 equals 81)
- 81 (81 multiplied by 1 equals 81)
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