Number 54 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 54 as a prime number, because it can be written as a product of two smaller natural numbers (check the factors of number 54 below).

Number of factors: 8.

List of factors/divisors: 1, 2, 3, 6, 9, 18, 27, 54.

Parity: 54 is an even number. It means it is divisible by 2 with no remainder.

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 66 (perfect number is a positive integer that is equal to the sum of its proper divisors).

Number: Prime number: | 47 yes | 48 no | 49 no | 50 no | 51 no | 52 no | 53 yes | 54 no | 55 no | 56 no | 57 no | 58 no | 59 yes | 60 no | 61 yes |
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