56571156 has 96 divisors (see below), whose sum is σ = 154434560. Its totient is φ = 17884800.

The previous prime is 56571149. The next prime is 56571157. The reversal of 56571156 is 65117565.

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 56571156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56571157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204090 + ... + 204366.

Almost surely, 2^56571156 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 56571156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77217280).

56571156 is an abundant number, since it is smaller than the sum of its proper divisors (97863404).

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

56571156 is a wasteful number, since it uses less digits than its factorization.

56571156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 374 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 56571156 is about 7521.3799265826. The cubic root of 56571156 is about 383.8825324291.

The spelling of 56571156 in words is "fifty-six million, five hundred seventy-one thousand, one hundred fifty-six".