56555982 has 80 divisors (see below), whose sum is σ = 147720672. Its totient is φ = 15837120.

The previous prime is 56555977. The next prime is 56556013. The reversal of 56555982 is 28955565.

56555982 is a `hidden beast` number, since 5 + 6 + 55 + 598 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 59632 + ... + 60572.

Almost surely, 2^56555982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56555982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73860336).

56555982 is an abundant number, since it is smaller than the sum of its proper divisors (91164690).

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

56555982 is a wasteful number, since it uses less digits than its factorization.

56555982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015 (or 1006 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The square root of 56555982 is about 7520.3711344587. The cubic root of 56555982 is about 383.8482066063.

The spelling of 56555982 in words is "fifty-six million, five hundred fifty-five thousand, nine hundred eighty-two".