56855040 has 160 divisors (see below), whose sum is σ = 198576576. Its totient is φ = 13762560.

The previous prime is 56854999. The next prime is 56855047. The reversal of 56855040 is 4055865.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 56854992 and 56855010.

It is not an unprimeable number, because it can be changed into a prime (56855047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84144 + ... + 84816.

Almost surely, 2^56855040 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 56855040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99288288).

56855040 is an abundant number, since it is smaller than the sum of its proper divisors (141721536).

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

56855040 is a wasteful number, since it uses less digits than its factorization.

56855040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 56855040 is about 7540.2281132602. The cubic root of 56855040 is about 384.5235913044.

The spelling of 56855040 in words is "fifty-six million, eight hundred fifty-five thousand, forty".