It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 488 591 is not a prime number.
For example, 488 591 can be divided by 31: 488 591 / 31 = 15 761.
For 488 591 to be a prime number, it would have been required that 488 591 has only two divisors, i.e., itself and 1.
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488 591 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 488 591 is about 698.993.
Thus, the square root of 488 591 is not an integer, and therefore 488 591 is not a square number.
The square of a number (here 488 591) is the result of the product of this number (488 591) by itself (i.e., 488 591 × 488 591); the square of 488 591 is sometimes called "raising 488 591 to the power 2", or "488 591 squared".
The square of 488 591 is 238 721 165 281 because 488 591 × 488 591 = 488 5912 = 238 721 165 281.
As a consequence, 488 591 is the square root of 238 721 165 281.
The multiples of 488 591 are all integers evenly divisible by 488 591, that is all numbers such that the remainder of the division by 488 591 is zero. There are infinitely many multiples of 488 591. The smallest multiples of 488 591 are: