It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 522 is not a prime number.
For example, 490 522 can be divided by 2: 490 522 / 2 = 245 261.
For 490 522 to be a prime number, it would have been required that 490 522 has only two divisors, i.e., itself and 1.
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490 522 is an even number, because it is evenly divisible by 2: 490 522 / 2 = 245 261.
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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 490 522 is about 700.373.
Thus, the square root of 490 522 is not an integer, and therefore 490 522 is not a square number.
The square of a number (here 490 522) is the result of the product of this number (490 522) by itself (i.e., 490 522 × 490 522); the square of 490 522 is sometimes called "raising 490 522 to the power 2", or "490 522 squared".
The square of 490 522 is 240 611 832 484 because 490 522 × 490 522 = 490 5222 = 240 611 832 484.
As a consequence, 490 522 is the square root of 240 611 832 484.
The multiples of 490 522 are all integers evenly divisible by 490 522, that is all numbers such that the remainder of the division by 490 522 is zero. There are infinitely many multiples of 490 522. The smallest multiples of 490 522 are: