56578984 has 64 divisors (see below), whose sum is σ = 134835840. Its totient is φ = 21615360.

The previous prime is 56578981. The next prime is 56578997. The reversal of 56578984 is 48987565.

It is not an unprimeable number, because it can be changed into a prime (56578981) 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, 31782 + ... + 33514.

It is an arithmetic number, because the mean of its divisors is an integer number (2106810).

Almost surely, 2^56578984 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 56578984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67417920).

56578984 is an abundant number, since it is smaller than the sum of its proper divisors (78256856).

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

56578984 is a wasteful number, since it uses less digits than its factorization.

56578984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810 (or 1806 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 52.

The square root of 56578984 is about 7521.9002918146. The cubic root of 56578984 is about 383.9002381180.

It can be divided in two parts, 5657 and 8984, that added together give a palindrome (14641).

The spelling of 56578984 in words is "fifty-six million, five hundred seventy-eight thousand, nine hundred eighty-four".