57855720 has 64 divisors (see below), whose sum is σ = 186923520. Its totient is φ = 14241024.

The previous prime is 57855719. The next prime is 57855737. The reversal of 57855720 is 2755875.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16984 + ... + 20103.

It is an arithmetic number, because the mean of its divisors is an integer number (2920680).

Almost surely, 2^57855720 is an apocalyptic number.

It is an amenable number.

57855720 is an abundant number, since it is smaller than the sum of its proper divisors (129067800).

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

57855720 is a wasteful number, since it uses less digits than its factorization.

57855720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37114 (or 37110 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 39.

The square root of 57855720 is about 7606.2947615774. The cubic root of 57855720 is about 386.7664262351.

The spelling of 57855720 in words is "fifty-seven million, eight hundred fifty-five thousand, seven hundred twenty".