56475720 has 192 divisors, whose sum is σ = 213333120. Its totient is φ = 12690432.

The previous prime is 56475709. The next prime is 56475721. The reversal of 56475720 is 2757465.

56475720 is a `hidden beast` number, since 5 + 647 + 5 + 7 + 2 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56475721) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 183807 + ... + 184113.

It is an arithmetic number, because the mean of its divisors is an integer number (1111110).

Almost surely, 2^56475720 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 56475720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106666560).

56475720 is an abundant number, since it is smaller than the sum of its proper divisors (156857400).

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

56475720 is a wasteful number, since it uses less digits than its factorization.

56475720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 397 counting only the distinct ones).

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

The square root of 56475720 is about 7515.0329340596. The cubic root of 56475720 is about 383.6665399390. Note that the first 3 decimals are identical.

The spelling of 56475720 in words is "fifty-six million, four hundred seventy-five thousand, seven hundred twenty".