56574720 has 144 divisors (see below), whose sum is σ = 200884320. Its totient is φ = 15077376.

The previous prime is 56574703. The next prime is 56574731. The reversal of 56574720 is 2747565.

56574720 is a `hidden beast` number, since 565 + 74 + 7 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33742 + ... + 35378.

It is an arithmetic number, because the mean of its divisors is an integer number (1395030).

Almost surely, 2^56574720 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 56574720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100442160).

56574720 is an abundant number, since it is smaller than the sum of its proper divisors (144309600).

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

56574720 is a wasteful number, since it uses less digits than its factorization.

56574720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 56574720 is about 7521.6168474604. The cubic root of 56574720 is about 383.8905938318.

The spelling of 56574720 in words is "fifty-six million, five hundred seventy-four thousand, seven hundred twenty".