57155193 has 16 divisors (see below), whose sum is σ = 85516800. Its totient is φ = 37724400.

The previous prime is 57155191. The next prime is 57155239. The reversal of 57155193 is 39155175.

It is not a de Polignac number, because 57155193 - 2¹ = 57155191 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57155191) 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, 7753 + ... + 13206.

It is an arithmetic number, because the mean of its divisors is an integer number (5344800).

Almost surely, 2^57155193 is an apocalyptic number.

It is an amenable number.

57155193 is a deficient number, since it is larger than the sum of its proper divisors (28361607).

57155193 is a wasteful number, since it uses less digits than its factorization.

57155193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21069 (or 21063 counting only the distinct ones).

The product of its digits is 23625, while the sum is 36.

The square root of 57155193 is about 7560.1053564087. The cubic root of 57155193 is about 385.1990717265.

The spelling of 57155193 in words is "fifty-seven million, one hundred fifty-five thousand, one hundred ninety-three".