57788556 has 48 divisors (see below), whose sum is σ = 155344896. Its totient is φ = 16377984.

The previous prime is 57788551. The next prime is 57788567. The reversal of 57788556 is 65588775.

It is a junction number, because it is equal to n+sod(n) for n = 57788499 and 57788508.

It is not an unprimeable number, because it can be changed into a prime (57788551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7960 + ... + 13376.

It is an arithmetic number, because the mean of its divisors is an integer number (3236352).

Almost surely, 2^57788556 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 57788556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77672448).

57788556 is an abundant number, since it is smaller than the sum of its proper divisors (97556340).

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

57788556 is a wasteful number, since it uses less digits than its factorization.

57788556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558 (or 5556 counting only the distinct ones).

The product of its digits is 2352000, while the sum is 51.

The square root of 57788556 is about 7601.8784520670. The cubic root of 57788556 is about 386.6167041403.

The spelling of 57788556 in words is "fifty-seven million, seven hundred eighty-eight thousand, five hundred fifty-six".