It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 61 021 is not a prime number.
For example, 61 021 can be divided by 139: 61 021 / 139 = 439.
For 61 021 to be a prime number, it would have been required that 61 021 has only two divisors, i.e., itself and 1.
Find out more:
61 021 is an odd number, because it is not evenly divisible by 2.
Find out more:
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 61 021 is about 247.024.
Thus, the square root of 61 021 is not an integer, and therefore 61 021 is not a square number.
The square of a number (here 61 021) is the result of the product of this number (61 021) by itself (i.e., 61 021 × 61 021); the square of 61 021 is sometimes called "raising 61 021 to the power 2", or "61 021 squared".
The square of 61 021 is 3 723 562 441 because 61 021 × 61 021 = 61 0212 = 3 723 562 441.
As a consequence, 61 021 is the square root of 3 723 562 441.
The multiples of 61 021 are all integers evenly divisible by 61 021, that is all numbers such that the remainder of the division by 61 021 is zero. There are infinitely many multiples of 61 021. The smallest multiples of 61 021 are: