56875431 has 4 divisors (see below), whose sum is σ = 75833912. Its totient is φ = 37916952.

The previous prime is 56875381. The next prime is 56875439. The reversal of 56875431 is 13457865.

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

It is not a de Polignac number, because 56875431 - 2⁶ = 56875367 is a prime.

It is a super-2 number, since 2×56875431² = 6469629302871522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56875431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56875439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9479236 + ... + 9479241.

It is an arithmetic number, because the mean of its divisors is an integer number (18958478).

Almost surely, 2^56875431 is an apocalyptic number.

56875431 is a deficient number, since it is larger than the sum of its proper divisors (18958481).

56875431 is a wasteful number, since it uses less digits than its factorization.

56875431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18958480.

The product of its digits is 100800, while the sum is 39.

The square root of 56875431 is about 7541.5801394668. The cubic root of 56875431 is about 384.5695554697.

The spelling of 56875431 in words is "fifty-six million, eight hundred seventy-five thousand, four hundred thirty-one".