56531376 has 120 divisors (see below), whose sum is σ = 174966480. Its totient is φ = 16896000.

The previous prime is 56531359. The next prime is 56531429. The reversal of 56531376 is 67313565.

It is a happy number.

56531376 is a `hidden beast` number, since 56 + 531 + 3 + 76 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 56531376.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140776 + ... + 141176.

It is an arithmetic number, because the mean of its divisors is an integer number (1458054).

Almost surely, 2^56531376 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 56531376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87483240).

56531376 is an abundant number, since it is smaller than the sum of its proper divisors (118435104).

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

56531376 is a wasteful number, since it uses less digits than its factorization.

56531376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 506 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 56531376 is about 7518.7349999850. The cubic root of 56531376 is about 383.7925311574.

The spelling of 56531376 in words is "fifty-six million, five hundred thirty-one thousand, three hundred seventy-six".