56604631 has 2 divisors, whose sum is σ = 56604632. Its totient is φ = 56604630.

The previous prime is 56604617. The next prime is 56604643. The reversal of 56604631 is 13640665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56604631 - 2⁵ = 56604599 is a prime.

It is a super-2 number, since 2×56604631² = 6408168501292322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56604593 and 56604602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56604661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28302315 + 28302316.

It is an arithmetic number, because the mean of its divisors is an integer number (28302316).

Almost surely, 2^56604631 is an apocalyptic number.

56604631 is a deficient number, since it is larger than the sum of its proper divisors (1).

56604631 is an equidigital number, since it uses as much as digits as its factorization.

56604631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 56604631 is about 7523.6049205152. The cubic root of 56604631 is about 383.9582361082.

The spelling of 56604631 in words is "fifty-six million, six hundred four thousand, six hundred thirty-one".