56931407 has 8 divisors (see below), whose sum is σ = 63288960. Its totient is φ = 50856480.

The previous prime is 56931403. The next prime is 56931451. The reversal of 56931407 is 70413965.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56931407 - 2² = 56931403 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56931403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70232 + ... + 71037.

It is an arithmetic number, because the mean of its divisors is an integer number (7911120).

Almost surely, 2^56931407 is an apocalyptic number.

56931407 is a deficient number, since it is larger than the sum of its proper divisors (6357553).

56931407 is a wasteful number, since it uses less digits than its factorization.

56931407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141313.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 56931407 is about 7545.2903853994. The cubic root of 56931407 is about 384.6956767540.

The spelling of 56931407 in words is "fifty-six million, nine hundred thirty-one thousand, four hundred seven".