Is 23521 a prime number?

23 521 is an odd number, because it is not evenly divisible by 2.

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• 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 23 521 is about 153.366.

Thus, the square root of 23 521 is not an integer, and therefore 23 521 is not a square number.

The square of a number (here 23 521) is the result of the product of this number (23 521) by itself (i.e., 23 521 × 23 521); the square of 23 521 is sometimes called "raising 23 521 to the power 2", or "23 521 squared".

The square of 23 521 is 553 237 441 because 23 521 × 23 521 = 23 521² = 553 237 441.

As a consequence, 23 521 is the square root of 553 237 441.

23 521 is a number with 5 digits.

The multiples of 23 521 are all integers evenly divisible by 23 521, that is all numbers such that the remainder of the division by 23 521 is zero. There are infinitely many multiples of 23 521. The smallest multiples of 23 521 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 23 521 too, since 0 × 23 521 = 0
• 23 521: indeed, 23 521 is a multiple of itself, since 23 521 is evenly divisible by 23 521 (we have 23 521 / 23 521 = 1, so the remainder of this division is indeed zero)
• 47 042: indeed, 47 042 = 23 521 × 2
• 70 563: indeed, 70 563 = 23 521 × 3
• 94 084: indeed, 94 084 = 23 521 × 4
• 117 605: indeed, 117 605 = 23 521 × 5
• etc.

• Preceding numbers: …23 519, 23 520
• Following numbers: 23 522, 23 523…

Nearest numbers from 23 521

• Preceding prime number: 23 509
• Following prime number: 23 531

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• 23 521 est-il un nombre premier ?