56872631 has 4 divisors (see below), whose sum is σ = 58707264. Its totient is φ = 55038000.

The previous prime is 56872609. The next prime is 56872639. The reversal of 56872631 is 13627865.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56872631 is a prime.

It is a super-2 number, since 2×56872631² = 6468992313724322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56872639) 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, 917270 + ... + 917331.

It is an arithmetic number, because the mean of its divisors is an integer number (14676816).

Almost surely, 2^56872631 is an apocalyptic number.

56872631 is a deficient number, since it is larger than the sum of its proper divisors (1834633).

56872631 is a wasteful number, since it uses less digits than its factorization.

56872631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834632.

The product of its digits is 60480, while the sum is 38.

The square root of 56872631 is about 7541.3944996930. The cubic root of 56872631 is about 384.5632445289.

The spelling of 56872631 in words is "fifty-six million, eight hundred seventy-two thousand, six hundred thirty-one".