It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 491 401 562 is not a prime number.
For example, 491 401 562 can be divided by 2: 491 401 562 / 2 = 245 700 781.
For 491 401 562 to be a prime number, it would have been required that 491 401 562 has only two divisors, i.e., itself and 1.
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491 401 562 is an even number, because it is evenly divisible by 2: 491 401 562 / 2 = 245 700 781.
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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 491 401 562 is about 22 167.579.
Thus, the square root of 491 401 562 is not an integer, and therefore 491 401 562 is not a square number.
The square of a number (here 491 401 562) is the result of the product of this number (491 401 562) by itself (i.e., 491 401 562 × 491 401 562); the square of 491 401 562 is sometimes called "raising 491 401 562 to the power 2", or "491 401 562 squared".
The square of 491 401 562 is 241 475 495 136 039 840 because 491 401 562 × 491 401 562 = 491 401 5622 = 241 475 495 136 039 840.
As a consequence, 491 401 562 is the square root of 241 475 495 136 039 840.
491 401 562 is a number with 9 digits.
The multiples of 491 401 562 are all integers evenly divisible by 491 401 562, that is all numbers such that the remainder of the division by 491 401 562 is zero. There are infinitely many multiples of 491 401 562. The smallest multiples of 491 401 562 are: