It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 513 is not a prime number.
For example, 490 513 can be divided by 31: 490 513 / 31 = 15 823.
For 490 513 to be a prime number, it would have been required that 490 513 has only two divisors, i.e., itself and 1.
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490 513 is an odd number, because it is not evenly divisible by 2.
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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 490 513 is about 700.366.
Thus, the square root of 490 513 is not an integer, and therefore 490 513 is not a square number.
The square of a number (here 490 513) is the result of the product of this number (490 513) by itself (i.e., 490 513 × 490 513); the square of 490 513 is sometimes called "raising 490 513 to the power 2", or "490 513 squared".
The square of 490 513 is 240 603 003 169 because 490 513 × 490 513 = 490 5132 = 240 603 003 169.
As a consequence, 490 513 is the square root of 240 603 003 169.
The multiples of 490 513 are all integers evenly divisible by 490 513, that is all numbers such that the remainder of the division by 490 513 is zero. There are infinitely many multiples of 490 513. The smallest multiples of 490 513 are: