57855858 has 32 divisors (see below), whose sum is σ = 121108992. Its totient is φ = 18403200.

The previous prime is 57855857. The next prime is 57855869. The reversal of 57855858 is 85855875.

It is a self number, because there is not a number n which added to its sum of digits gives 57855858.

It is not an unprimeable number, because it can be changed into a prime (57855857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11448 + ... + 15708.

It is an arithmetic number, because the mean of its divisors is an integer number (3784656).

Almost surely, 2^57855858 is an apocalyptic number.

57855858 is an abundant number, since it is smaller than the sum of its proper divisors (63253134).

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

57855858 is a wasteful number, since it uses less digits than its factorization.

57855858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4370.

The product of its digits is 2240000, while the sum is 51.

The square root of 57855858 is about 7606.3038330059. The cubic root of 57855858 is about 386.7667337456.

The spelling of 57855858 in words is "fifty-seven million, eight hundred fifty-five thousand, eight hundred fifty-eight".