Number 551 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 551 as a prime number, because it can be written as a product of two smaller natural numbers (check the factors of number 551 below).

Number of factors: 4.

List of factors/divisors: 1, 19, 29, 551.

Parity: 551 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 49 (perfect number is a positive integer that is equal to the sum of its proper divisors).

Number: Prime number: | 544 no | 545 no | 546 no | 547 yes | 548 no | 549 no | 550 no | 551 no | 552 no | 553 no | 554 no | 555 no | 556 no | 557 yes | 558 no |
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