It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 157 502 is not a prime number.
For example, 157 502 can be divided by 2: 157 502 / 2 = 78 751.
For 157 502 to be a prime number, it would have been required that 157 502 has only two divisors, i.e., itself and 1.
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157 502 is an even number, because it is evenly divisible by 2: 157 502 / 2 = 78 751.
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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 157 502 is about 396.865.
Thus, the square root of 157 502 is not an integer, and therefore 157 502 is not a square number.
The square of a number (here 157 502) is the result of the product of this number (157 502) by itself (i.e., 157 502 × 157 502); the square of 157 502 is sometimes called "raising 157 502 to the power 2", or "157 502 squared".
The square of 157 502 is 24 806 880 004 because 157 502 × 157 502 = 157 5022 = 24 806 880 004.
As a consequence, 157 502 is the square root of 24 806 880 004.
The multiples of 157 502 are all integers evenly divisible by 157 502, that is all numbers such that the remainder of the division by 157 502 is zero. There are infinitely many multiples of 157 502. The smallest multiples of 157 502 are: