Number 563 is a prime number.

A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. Therefore we consider 563 as a prime number, because:

- 563 is a natural number greater than 1,
- 563 is not a product of 2 smaller natural numbers (it can be divided only by 1 and itself)

Number of factors: 2.

List of factors/divisors: 1, 563.

Parity: 563 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 1 (perfect number is a positive integer that is equal to the sum of its proper divisors).

Number: Prime number: | 556 no | 557 yes | 558 no | 559 no | 560 no | 561 no | 562 no | 563 yes | 564 no | 565 no | 566 no | 567 no | 568 no | 569 yes | 570 no |
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