56401955 has 16 divisors (see below), whose sum is σ = 70243200. Its totient is φ = 43424640.

The previous prime is 56401951. The next prime is 56401981. The reversal of 56401955 is 55910465.

It is not a de Polignac number, because 56401955 - 2² = 56401951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56401951) 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, 78086 + ... + 78804.

It is an arithmetic number, because the mean of its divisors is an integer number (4390200).

Almost surely, 2^56401955 is an apocalyptic number.

56401955 is a deficient number, since it is larger than the sum of its proper divisors (13841245).

56401955 is a wasteful number, since it uses less digits than its factorization.

56401955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 56401955 is about 7510.1235009819. The cubic root of 56401955 is about 383.4994268681.

The spelling of 56401955 in words is "fifty-six million, four hundred one thousand, nine hundred fifty-five".