Number 1251 is not a prime number. It is a composite number.

A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. We do not consider 1251 as a prime number, because it can be written as a product of two smaller natural numbers (check the factors of number 1251 below).

Number of factors: 6.

List of factors/divisors: 1, 3, 9, 139, 417, 1251.

Parity: 1251 is an odd number.

Perfect square: no (a square number or perfect square is an integer that is the square of an integer).

Perfect number: no, because the sum of its proper divisors is 569 (perfect number is a positive integer that is equal to the sum of its proper divisors).

Number: Prime number: | 1244 no | 1245 no | 1246 no | 1247 no | 1248 no | 1249 yes | 1250 no | 1251 no | 1252 no | 1253 no | 1254 no | 1255 no | 1256 no | 1257 no | 1258 no |
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