56872775 has 18 divisors (see below), whose sum is σ = 71917272. Its totient is φ = 44606800.

The previous prime is 56872723. The next prime is 56872793. The reversal of 56872775 is 57727865.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-56872775 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 317636 + ... + 317814.

It is an arithmetic number, because the mean of its divisors is an integer number (3995404).

Almost surely, 2^56872775 is an apocalyptic number.

56872775 is a deficient number, since it is larger than the sum of its proper divisors (15044497).

56872775 is an equidigital number, since it uses as much as digits as its factorization.

56872775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 255 counting only the distinct ones).

The product of its digits is 823200, while the sum is 47.

The square root of 56872775 is about 7541.4040469928. The cubic root of 56872775 is about 384.5635690966.

The spelling of 56872775 in words is "fifty-six million, eight hundred seventy-two thousand, seven hundred seventy-five".