Is 15801 a prime number?

15 801 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 15 801 is about 125.702.

Thus, the square root of 15 801 is not an integer, and therefore 15 801 is not a square number.

The square of a number (here 15 801) is the result of the product of this number (15 801) by itself (i.e., 15 801 × 15 801); the square of 15 801 is sometimes called "raising 15 801 to the power 2", or "15 801 squared".

The square of 15 801 is 249 671 601 because 15 801 × 15 801 = 15 801² = 249 671 601.

As a consequence, 15 801 is the square root of 249 671 601.

15 801 is a number with 5 digits.

The multiples of 15 801 are all integers evenly divisible by 15 801, that is all numbers such that the remainder of the division by 15 801 is zero. There are infinitely many multiples of 15 801. The smallest multiples of 15 801 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 15 801 too, since 0 × 15 801 = 0
• 15 801: indeed, 15 801 is a multiple of itself, since 15 801 is evenly divisible by 15 801 (we have 15 801 / 15 801 = 1, so the remainder of this division is indeed zero)
• 31 602: indeed, 31 602 = 15 801 × 2
• 47 403: indeed, 47 403 = 15 801 × 3
• 63 204: indeed, 63 204 = 15 801 × 4
• 79 005: indeed, 79 005 = 15 801 × 5
• etc.

• Preceding numbers: …15 799, 15 800
• Following numbers: 15 802, 15 803…

Nearest numbers from 15 801

• Preceding prime number: 15 797
• Following prime number: 15 803

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• 15 801 est-il un nombre premier ?