57471331 has 2 divisors, whose sum is σ = 57471332. Its totient is φ = 57471330.

The previous prime is 57471329. The next prime is 57471341. The reversal of 57471331 is 13317475.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57471331 - 2¹ = 57471329 is a prime.

It is a super-2 number, since 2×57471331² = 6605907773823122, which contains 22 as substring.

Together with 57471329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 57471293 and 57471302.

It is not a weakly prime, because it can be changed into another prime (57471341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28735665 + 28735666.

It is an arithmetic number, because the mean of its divisors is an integer number (28735666).

Almost surely, 2^57471331 is an apocalyptic number.

57471331 is a deficient number, since it is larger than the sum of its proper divisors (1).

57471331 is an equidigital number, since it uses as much as digits as its factorization.

57471331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 31.

The square root of 57471331 is about 7580.9848304821. The cubic root of 57471331 is about 385.9079733545.

The spelling of 57471331 in words is "fifty-seven million, four hundred seventy-one thousand, three hundred thirty-one".