It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 772 is not a prime number.
For example, 165 772 can be divided by 2: 165 772 / 2 = 82 886.
For 165 772 to be a prime number, it would have been required that 165 772 has only two divisors, i.e., itself and 1.
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165 772 is an even number, because it is evenly divisible by 2: 165 772 / 2 = 82 886.
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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 165 772 is about 407.151.
Thus, the square root of 165 772 is not an integer, and therefore 165 772 is not a square number.
The square of a number (here 165 772) is the result of the product of this number (165 772) by itself (i.e., 165 772 × 165 772); the square of 165 772 is sometimes called "raising 165 772 to the power 2", or "165 772 squared".
The square of 165 772 is 27 480 355 984 because 165 772 × 165 772 = 165 7722 = 27 480 355 984.
As a consequence, 165 772 is the square root of 27 480 355 984.
The multiples of 165 772 are all integers evenly divisible by 165 772, that is all numbers such that the remainder of the division by 165 772 is zero. There are infinitely many multiples of 165 772. The smallest multiples of 165 772 are: