56381560 has 64 divisors (see below), whose sum is σ = 134265600. Its totient is φ = 21273600.

The previous prime is 56381551. The next prime is 56381587. The reversal of 56381560 is 6518365.

It is a congruent number.

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, 50286 + ... + 51394.

It is an arithmetic number, because the mean of its divisors is an integer number (2097900).

Almost surely, 2^56381560 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 56381560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67132800).

56381560 is an abundant number, since it is smaller than the sum of its proper divisors (77884040).

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

56381560 is a wasteful number, since it uses less digits than its factorization.

56381560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 56381560 is about 7508.7655443488. The cubic root of 56381560 is about 383.4531967109.

The spelling of 56381560 in words is "fifty-six million, three hundred eighty-one thousand, five hundred sixty".