56806815 has 24 divisors (see below), whose sum is σ = 98424720. Its totient is φ = 27965184.

The previous prime is 56806811. The next prime is 56806817. The reversal of 56806815 is 51860865.

It is not a de Polignac number, because 56806815 - 2² = 56806811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56806811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8670 + ... + 13739.

It is an arithmetic number, because the mean of its divisors is an integer number (4101030).

Almost surely, 2^56806815 is an apocalyptic number.

56806815 is a deficient number, since it is larger than the sum of its proper divisors (41617905).

56806815 is a wasteful number, since it uses less digits than its factorization.

56806815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22443 (or 22430 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 56806815 is about 7537.0295873109. The cubic root of 56806815 is about 384.4148416630.

The spelling of 56806815 in words is "fifty-six million, eight hundred six thousand, eight hundred fifteen".