56557888 has 56 divisors (see below), whose sum is σ = 119969280. Its totient is φ = 26396160.

The previous prime is 56557883. The next prime is 56557913. The reversal of 56557888 is 88875565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56557883) 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, 57045 + ... + 58027.

Almost surely, 2^56557888 is an apocalyptic number.

56557888 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56557888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59984640).

56557888 is an abundant number, since it is smaller than the sum of its proper divisors (63411392).

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

56557888 is a wasteful number, since it uses less digits than its factorization.

56557888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1045 counting only the distinct ones).

The product of its digits is 2688000, while the sum is 52.

The square root of 56557888 is about 7520.4978558603. The cubic root of 56557888 is about 383.8525185961.

The spelling of 56557888 in words is "fifty-six million, five hundred fifty-seven thousand, eight hundred eighty-eight".