Is 55487513 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 55 487 513 is a prime number.
Indeed, the definition of a prime numbers is to have exactly two distinct positive divisors, 1 and itself. A number is a divisor of another number when the remainder of Euclid’s division of the second one by the first one is zero. Concerning the number 55 487 513, the only two divisors are 1 and 55 487 513. Therefore 55 487 513 is a prime number.
As a consequence, 55 487 513 is only a multiple of 1 and 55 487 513.
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Since 55487513 is a prime number, 55487513 is also a deficient number, that is to say 55487513 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 55487513 without 55487513 itself (that is 1, by definition!).