It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 55 998 is not a prime number.
For example, 55 998 can be divided by 2: 55 998 / 2 = 27 999.
For 55 998 to be a prime number, it would have been required that 55 998 has only two divisors, i.e., itself and 1.
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55 998 is an even number, because it is evenly divisible by 2: 55 998 / 2 = 27 999.
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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 55 998 is about 236.639.
Thus, the square root of 55 998 is not an integer, and therefore 55 998 is not a square number.
The square of a number (here 55 998) is the result of the product of this number (55 998) by itself (i.e., 55 998 × 55 998); the square of 55 998 is sometimes called "raising 55 998 to the power 2", or "55 998 squared".
The square of 55 998 is 3 135 776 004 because 55 998 × 55 998 = 55 9982 = 3 135 776 004.
As a consequence, 55 998 is the square root of 3 135 776 004.
The multiples of 55 998 are all integers evenly divisible by 55 998, that is all numbers such that the remainder of the division by 55 998 is zero. There are infinitely many multiples of 55 998. The smallest multiples of 55 998 are: