57471931 has 4 divisors (see below), whose sum is σ = 62696664. Its totient is φ = 52247200.

The previous prime is 57471919. The next prime is 57471949. The reversal of 57471931 is 13917475.

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

It is a cyclic number.

It is not a de Polignac number, because 57471931 - 2⁵ = 57471899 is a prime.

It is a super-2 number, since 2×57471931² = 6606045705737522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57471031) 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, 2612350 + ... + 2612371.

It is an arithmetic number, because the mean of its divisors is an integer number (15674166).

Almost surely, 2^57471931 is an apocalyptic number.

57471931 is a deficient number, since it is larger than the sum of its proper divisors (5224733).

57471931 is a wasteful number, since it uses less digits than its factorization.

57471931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224732.

The product of its digits is 26460, while the sum is 37.

The square root of 57471931 is about 7581.0244030738. The cubic root of 57471931 is about 385.9093163080.

The spelling of 57471931 in words is "fifty-seven million, four hundred seventy-one thousand, nine hundred thirty-one".