56012004 has 36 divisors (see below), whose sum is σ = 143991120. Its totient is φ = 18353520.

The previous prime is 56011997. The next prime is 56012017. The reversal of 56012004 is 40021065.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11062 + ... + 15309.

Almost surely, 2^56012004 is an apocalyptic number.

It is an amenable number.

56012004 is an abundant number, since it is smaller than the sum of its proper divisors (87979116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56012004 is a wasteful number, since it uses less digits than its factorization.

56012004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26440 (or 26435 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 56012004 is about 7484.1167815581. The cubic root of 56012004 is about 382.6135712990.

Adding to 56012004 its reverse (40021065), we get a palindrome (96033069).

The spelling of 56012004 in words is "fifty-six million, twelve thousand, four".