Is 521009 a prime number?

521 009 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 521 009 is about 721.810.

Thus, the square root of 521 009 is not an integer, and therefore 521 009 is not a square number.

Anyway, 521 009 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 521 009) is the result of the product of this number (521 009) by itself (i.e., 521 009 × 521 009); the square of 521 009 is sometimes called "raising 521 009 to the power 2", or "521 009 squared".

The square of 521 009 is 271 450 378 081 because 521 009 × 521 009 = 521 009² = 271 450 378 081.

As a consequence, 521 009 is the square root of 271 450 378 081.

521 009 is a number with 6 digits.

The multiples of 521 009 are all integers evenly divisible by 521 009, that is all numbers such that the remainder of the division by 521 009 is zero. There are infinitely many multiples of 521 009. The smallest multiples of 521 009 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 521 009 too, since 0 × 521 009 = 0
• 521 009: indeed, 521 009 is a multiple of itself, since 521 009 is evenly divisible by 521 009 (we have 521 009 / 521 009 = 1, so the remainder of this division is indeed zero)
• 1 042 018: indeed, 1 042 018 = 521 009 × 2
• 1 563 027: indeed, 1 563 027 = 521 009 × 3
• 2 084 036: indeed, 2 084 036 = 521 009 × 4
• 2 605 045: indeed, 2 605 045 = 521 009 × 5
• etc.

• Preceding numbers: …521 007, 521 008
• Following numbers: 521 010, 521 011…

Nearest numbers from 521 009

• Preceding prime number: 520 981
• Following prime number: 521 021

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• 521 009 est-il un nombre premier ?