56578400 has 72 divisors (see below), whose sum is σ = 139209840. Its totient is φ = 22453760.

The previous prime is 56578393. The next prime is 56578427. The reversal of 56578400 is 487565.

56578400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56578400² = 6402230693120000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157421 + ... + 157779.

It is an arithmetic number, because the mean of its divisors is an integer number (1933470).

Almost surely, 2^56578400 is an apocalyptic number.

56578400 is a gapful number since it is divisible by the number (50) 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 56578400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69604920).

56578400 is an abundant number, since it is smaller than the sum of its proper divisors (82631440).

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

56578400 is a wasteful number, since it uses less digits than its factorization.

56578400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 56578400 is about 7521.8614717369. The cubic root of 56578400 is about 383.8989172594.

The spelling of 56578400 in words is "fifty-six million, five hundred seventy-eight thousand, four hundred".