It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 800 502 is not a prime number.
For example, 800 502 can be divided by 2: 800 502 / 2 = 400 251.
For 800 502 to be a prime number, it would have been required that 800 502 has only two divisors, i.e., itself and 1.
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800 502 is an even number, because it is evenly divisible by 2: 800 502 / 2 = 400 251.
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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 800 502 is about 894.708.
Thus, the square root of 800 502 is not an integer, and therefore 800 502 is not a square number.
The square of a number (here 800 502) is the result of the product of this number (800 502) by itself (i.e., 800 502 × 800 502); the square of 800 502 is sometimes called "raising 800 502 to the power 2", or "800 502 squared".
The square of 800 502 is 640 803 452 004 because 800 502 × 800 502 = 800 5022 = 640 803 452 004.
As a consequence, 800 502 is the square root of 640 803 452 004.
The multiples of 800 502 are all integers evenly divisible by 800 502, that is all numbers such that the remainder of the division by 800 502 is zero. There are infinitely many multiples of 800 502. The smallest multiples of 800 502 are: