57493131 has 4 divisors (see below), whose sum is σ = 76657512. Its totient is φ = 38328752.

The previous prime is 57493097. The next prime is 57493147. The reversal of 57493131 is 13139475.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57493131 is a prime.

It is a super-2 number, since 2×57493131² = 6610920224366322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57493092 and 57493101.

It is not an unprimeable number, because it can be changed into a prime (57493231) 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, 9582186 + ... + 9582191.

It is an arithmetic number, because the mean of its divisors is an integer number (19164378).

Almost surely, 2^57493131 is an apocalyptic number.

57493131 is a deficient number, since it is larger than the sum of its proper divisors (19164381).

57493131 is a wasteful number, since it uses less digits than its factorization.

57493131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19164380.

The product of its digits is 11340, while the sum is 33.

The square root of 57493131 is about 7582.4225020768. The cubic root of 57493131 is about 385.9567613339.

The spelling of 57493131 in words is "fifty-seven million, four hundred ninety-three thousand, one hundred thirty-one".