It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 538 264 is not a prime number.
For example, 538 264 can be divided by 2: 538 264 / 2 = 269 132.
For 538 264 to be a prime number, it would have been required that 538 264 has only two divisors, i.e., itself and 1.
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538 264 is an even number, because it is evenly divisible by 2: 538 264 / 2 = 269 132.
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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 538 264 is about 733.665.
Thus, the square root of 538 264 is not an integer, and therefore 538 264 is not a square number.
The square of a number (here 538 264) is the result of the product of this number (538 264) by itself (i.e., 538 264 × 538 264); the square of 538 264 is sometimes called "raising 538 264 to the power 2", or "538 264 squared".
The square of 538 264 is 289 728 133 696 because 538 264 × 538 264 = 538 2642 = 289 728 133 696.
As a consequence, 538 264 is the square root of 289 728 133 696.
The multiples of 538 264 are all integers evenly divisible by 538 264, that is all numbers such that the remainder of the division by 538 264 is zero. There are infinitely many multiples of 538 264. The smallest multiples of 538 264 are: