56057904 has 120 divisors (see below), whose sum is σ = 188797440. Its totient is φ = 15168384.

The previous prime is 56057873. The next prime is 56057917. The reversal of 56057904 is 40975065.

56057904 is a `hidden beast` number, since 560 + 5 + 7 + 90 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 17689 + ... + 20615.

It is an arithmetic number, because the mean of its divisors is an integer number (1573312).

Almost surely, 2^56057904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56057904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94398720).

56057904 is an abundant number, since it is smaller than the sum of its proper divisors (132739536).

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

56057904 is a wasteful number, since it uses less digits than its factorization.

56057904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967 (or 2958 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 56057904 is about 7487.1826476987. The cubic root of 56057904 is about 382.7180558541.

The spelling of 56057904 in words is "fifty-six million, fifty-seven thousand, nine hundred four".