56490631 has 2 divisors, whose sum is σ = 56490632. Its totient is φ = 56490630.

The previous prime is 56490619. The next prime is 56490647. The reversal of 56490631 is 13609465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56490631 - 2⁷ = 56490503 is a prime.

It is a super-2 number, since 2×56490631² = 6382382781556322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56490611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28245315 + 28245316.

It is an arithmetic number, because the mean of its divisors is an integer number (28245316).

Almost surely, 2^56490631 is an apocalyptic number.

56490631 is a deficient number, since it is larger than the sum of its proper divisors (1).

56490631 is an equidigital number, since it uses as much as digits as its factorization.

56490631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 56490631 is about 7516.0249467388. The cubic root of 56490631 is about 383.7003028160.

It can be divided in two parts, 56490 and 631, that added together give a square (57121 = 239²).

The spelling of 56490631 in words is "fifty-six million, four hundred ninety thousand, six hundred thirty-one".