56361865 has 16 divisors (see below), whose sum is σ = 78566400. Its totient is φ = 38013120.

The previous prime is 56361857. The next prime is 56361869. The reversal of 56361865 is 56816365.

It is not a de Polignac number, because 56361865 - 2³ = 56361857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56361869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11065 + ... + 15334.

It is an arithmetic number, because the mean of its divisors is an integer number (4910400).

Almost surely, 2^56361865 is an apocalyptic number.

It is an amenable number.

56361865 is a deficient number, since it is larger than the sum of its proper divisors (22204535).

56361865 is a wasteful number, since it uses less digits than its factorization.

56361865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26472.

The product of its digits is 129600, while the sum is 40.

The square root of 56361865 is about 7507.4539625628. The cubic root of 56361865 is about 383.4085426890.

The spelling of 56361865 in words is "fifty-six million, three hundred sixty-one thousand, eight hundred sixty-five".