57112911 has 16 divisors (see below), whose sum is σ = 89589600. Its totient is φ = 35835264.

The previous prime is 57112873. The next prime is 57112927. The reversal of 57112911 is 11921175.

57112911 is a `hidden beast` number, since 571 + 1 + 2 + 91 + 1 = 666.

It is not a de Polignac number, because 57112911 - 2⁹ = 57112399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57112981) 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 15 ways as a sum of consecutive naturals, for example, 61756 + ... + 62673.

It is an arithmetic number, because the mean of its divisors is an integer number (5599350).

Almost surely, 2^57112911 is an apocalyptic number.

57112911 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

57112911 is a deficient number, since it is larger than the sum of its proper divisors (32476689).

57112911 is a wasteful number, since it uses less digits than its factorization.

57112911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124455 (or 124449 counting only the distinct ones).

The product of its digits is 630, while the sum is 27.

The square root of 57112911 is about 7557.3084494415. The cubic root of 57112911 is about 385.1040613744.

The spelling of 57112911 in words is "fifty-seven million, one hundred twelve thousand, nine hundred eleven".