Number 520 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 520 as a prime number, because it can be written as a product of two smaller natural numbers (check the factors of number 520 below).

Number of factors: 16.

List of factors/divisors: 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520.

Parity: 520 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 740 (perfect number is a positive integer that is equal to the sum of its proper divisors).

Number: Prime number: | 513 no | 514 no | 515 no | 516 no | 517 no | 518 no | 519 no | 520 no | 521 yes | 522 no | 523 yes | 524 no | 525 no | 526 no | 527 no |
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