57120372 has 36 divisors (see below), whose sum is σ = 149369220. Its totient is φ = 18383232.

The previous prime is 57120367. The next prime is 57120373. The reversal of 57120372 is 27302175.

57120372 is a `hidden beast` number, since 571 + 20 + 3 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24561936 + 32558436 = 4956^2 + 5706^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57120373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26313 + ... + 28400.

It is an arithmetic number, because the mean of its divisors is an integer number (4149145).

Almost surely, 2^57120372 is an apocalyptic number.

It is an amenable number.

57120372 is an abundant number, since it is smaller than the sum of its proper divisors (92248848).

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

57120372 is a wasteful number, since it uses less digits than its factorization.

57120372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54752 (or 54747 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 57120372 is about 7557.8020614462. The cubic root of 57120372 is about 385.1208301239.

The spelling of 57120372 in words is "fifty-seven million, one hundred twenty thousand, three hundred seventy-two".