It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 372 is not a prime number.
For example, 165 372 can be divided by 2: 165 372 / 2 = 82 686.
For 165 372 to be a prime number, it would have been required that 165 372 has only two divisors, i.e., itself and 1.
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165 372 is an even number, because it is evenly divisible by 2: 165 372 / 2 = 82 686.
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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 165 372 is about 406.660.
Thus, the square root of 165 372 is not an integer, and therefore 165 372 is not a square number.
The square of a number (here 165 372) is the result of the product of this number (165 372) by itself (i.e., 165 372 × 165 372); the square of 165 372 is sometimes called "raising 165 372 to the power 2", or "165 372 squared".
The square of 165 372 is 27 347 898 384 because 165 372 × 165 372 = 165 3722 = 27 347 898 384.
As a consequence, 165 372 is the square root of 27 347 898 384.
The multiples of 165 372 are all integers evenly divisible by 165 372, that is all numbers such that the remainder of the division by 165 372 is zero. There are infinitely many multiples of 165 372. The smallest multiples of 165 372 are: