It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 53 343 is not a prime number.
For example, 53 343 can be divided by 3: 53 343 / 3 = 17 781.
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For 53 343 to be a prime number, it would have been required that 53 343 has only two divisors, i.e., itself and 1.
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53 343 is an odd number, because it is not evenly divisible by 2.
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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 53 343 is about 230.961.
Thus, the square root of 53 343 is not an integer, and therefore 53 343 is not a square number.
The square of a number (here 53 343) is the result of the product of this number (53 343) by itself (i.e., 53 343 × 53 343); the square of 53 343 is sometimes called "raising 53 343 to the power 2", or "53 343 squared".
The square of 53 343 is 2 845 475 649 because 53 343 × 53 343 = 53 3432 = 2 845 475 649.
As a consequence, 53 343 is the square root of 2 845 475 649.
The multiples of 53 343 are all integers evenly divisible by 53 343, that is all numbers such that the remainder of the division by 53 343 is zero. There are infinitely many multiples of 53 343. The smallest multiples of 53 343 are: