57112381 has 4 divisors (see below), whose sum is σ = 59595552. Its totient is φ = 54629212.

The previous prime is 57112373. The next prime is 57112387. The reversal of 57112381 is 18321175.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57112381 - 2³ = 57112373 is a prime.

It is a super-2 number, since 2×57112381² = 6523648126978322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57112387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1241551 + ... + 1241596.

It is an arithmetic number, because the mean of its divisors is an integer number (14898888).

Almost surely, 2^57112381 is an apocalyptic number.

It is an amenable number.

57112381 is a deficient number, since it is larger than the sum of its proper divisors (2483171).

57112381 is a wasteful number, since it uses less digits than its factorization.

57112381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483170.

The product of its digits is 1680, while the sum is 28.

The square root of 57112381 is about 7557.2733839659. The cubic root of 57112381 is about 385.1028701330.

The spelling of 57112381 in words is "fifty-seven million, one hundred twelve thousand, three hundred eighty-one".