56455631 has 4 divisors (see below), whose sum is σ = 59427000. Its totient is φ = 53484264.

The previous prime is 56455627. The next prime is 56455697. The reversal of 56455631 is 13655465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56455631 - 2² = 56455627 is a prime.

It is a super-2 number, since 2×56455631² = 6374476543216322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56455591 and 56455600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56455621) 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 in 3 ways as a sum of consecutive naturals, for example, 1485656 + ... + 1485693.

It is an arithmetic number, because the mean of its divisors is an integer number (14856750).

Almost surely, 2^56455631 is an apocalyptic number.

56455631 is a deficient number, since it is larger than the sum of its proper divisors (2971369).

56455631 is a wasteful number, since it uses less digits than its factorization.

56455631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971368.

The product of its digits is 54000, while the sum is 35.

The square root of 56455631 is about 7513.6962275567. The cubic root of 56455631 is about 383.6210431534.

The spelling of 56455631 in words is "fifty-six million, four hundred fifty-five thousand, six hundred thirty-one".