56801865 has 16 divisors (see below), whose sum is σ = 94017600. Its totient is φ = 29249472.

The previous prime is 56801861. The next prime is 56801909. The reversal of 56801865 is 56810865.

56801865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56801865 - 2² = 56801861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56801861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64855 + ... + 65724.

It is an arithmetic number, because the mean of its divisors is an integer number (5876100).

Almost surely, 2^56801865 is an apocalyptic number.

It is an amenable number.

56801865 is a deficient number, since it is larger than the sum of its proper divisors (37215735).

56801865 is a wasteful number, since it uses less digits than its factorization.

56801865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130616.

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

The square root of 56801865 is about 7536.7012014541. The cubic root of 56801865 is about 384.4036756979.

The spelling of 56801865 in words is "fifty-six million, eight hundred one thousand, eight hundred sixty-five".