Is 21529 a prime number?

21 529 is an odd number, because it is not evenly divisible by 2.

Find out more:

• What is an even number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 21 529 is about 146.728.

Thus, the square root of 21 529 is not an integer, and therefore 21 529 is not a square number.

Anyway, 21 529 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 21 529) is the result of the product of this number (21 529) by itself (i.e., 21 529 × 21 529); the square of 21 529 is sometimes called "raising 21 529 to the power 2", or "21 529 squared".

The square of 21 529 is 463 497 841 because 21 529 × 21 529 = 21 529² = 463 497 841.

As a consequence, 21 529 is the square root of 463 497 841.

21 529 is a number with 5 digits.

The multiples of 21 529 are all integers evenly divisible by 21 529, that is all numbers such that the remainder of the division by 21 529 is zero. There are infinitely many multiples of 21 529. The smallest multiples of 21 529 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 21 529 too, since 0 × 21 529 = 0
• 21 529: indeed, 21 529 is a multiple of itself, since 21 529 is evenly divisible by 21 529 (we have 21 529 / 21 529 = 1, so the remainder of this division is indeed zero)
• 43 058: indeed, 43 058 = 21 529 × 2
• 64 587: indeed, 64 587 = 21 529 × 3
• 86 116: indeed, 86 116 = 21 529 × 4
• 107 645: indeed, 107 645 = 21 529 × 5
• etc.

• Preceding numbers: …21 527, 21 528
• Following numbers: 21 530, 21 531…

Nearest numbers from 21 529

• Preceding prime number: 21 523
• Following prime number: 21 557

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• 21 529 est-il un nombre premier ?