56554440 has 64 divisors (see below), whose sum is σ = 170856000. Its totient is φ = 14975232.

The previous prime is 56554439. The next prime is 56554451. The reversal of 56554440 is 4445565.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16299 + ... + 19461.

It is an arithmetic number, because the mean of its divisors is an integer number (2669625).

Almost surely, 2^56554440 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 56554440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85428000).

56554440 is an abundant number, since it is smaller than the sum of its proper divisors (114301560).

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

56554440 is a wasteful number, since it uses less digits than its factorization.

56554440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326 (or 3322 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 56554440 is about 7520.2686122239. The cubic root of 56554440 is about 383.8447180315.

The spelling of 56554440 in words is "fifty-six million, five hundred fifty-four thousand, four hundred forty".