It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 522 is not a prime number.
For example, 397 522 can be divided by 2: 397 522 / 2 = 198 761.
For 397 522 to be a prime number, it would have been required that 397 522 has only two divisors, i.e., itself and 1.
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397 522 is an even number, because it is evenly divisible by 2: 397 522 / 2 = 198 761.
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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 397 522 is about 630.493.
Thus, the square root of 397 522 is not an integer, and therefore 397 522 is not a square number.
The square of a number (here 397 522) is the result of the product of this number (397 522) by itself (i.e., 397 522 × 397 522); the square of 397 522 is sometimes called "raising 397 522 to the power 2", or "397 522 squared".
The square of 397 522 is 158 023 740 484 because 397 522 × 397 522 = 397 5222 = 158 023 740 484.
As a consequence, 397 522 is the square root of 158 023 740 484.
The multiples of 397 522 are all integers evenly divisible by 397 522, that is all numbers such that the remainder of the division by 397 522 is zero. There are infinitely many multiples of 397 522. The smallest multiples of 397 522 are: