56571372 has 216 divisors, whose sum is σ = 180286288. Its totient is φ = 15396480.

The previous prime is 56571371. The next prime is 56571391. The reversal of 56571372 is 27317565.

56571372 is a `hidden beast` number, since 56 + 571 + 37 + 2 = 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 (56571371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1528938 + ... + 1528974.

Almost surely, 2^56571372 is an apocalyptic number.

56571372 is a gapful number since it is divisible by the number (52) 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 56571372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90143144).

56571372 is an abundant number, since it is smaller than the sum of its proper divisors (123714916).

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

56571372 is a wasteful number, since it uses less digits than its factorization.

56571372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 66 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 56571372 is about 7521.3942856361. The cubic root of 56571372 is about 383.8830210086.

The spelling of 56571372 in words is "fifty-six million, five hundred seventy-one thousand, three hundred seventy-two".