56631552 has 72 divisors (see below), whose sum is σ = 158696160. Its totient is φ = 17879040.

The previous prime is 56631551. The next prime is 56631557. The reversal of 56631552 is 25513665.

It is not an unprimeable number, because it can be changed into a prime (56631551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12652 + ... + 16532.

Almost surely, 2^56631552 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 56631552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79348080).

56631552 is an abundant number, since it is smaller than the sum of its proper divisors (102064608).

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

56631552 is a wasteful number, since it uses less digits than its factorization.

56631552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919 (or 3905 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

The square root of 56631552 is about 7525.3938102933. The cubic root of 56631552 is about 384.0190962726.

The spelling of 56631552 in words is "fifty-six million, six hundred thirty-one thousand, five hundred fifty-two".