57148331 has 2 divisors, whose sum is σ = 57148332. Its totient is φ = 57148330.

The previous prime is 57148327. The next prime is 57148361. The reversal of 57148331 is 13384175.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57148331 - 2² = 57148327 is a prime.

It is a super-2 number, since 2×57148331² = 6531863472171122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57148361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28574165 + 28574166.

It is an arithmetic number, because the mean of its divisors is an integer number (28574166).

Almost surely, 2^57148331 is an apocalyptic number.

57148331 is a deficient number, since it is larger than the sum of its proper divisors (1).

57148331 is an equidigital number, since it uses as much as digits as its factorization.

57148331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 57148331 is about 7559.6515131321. The cubic root of 57148331 is about 385.1836555606.

The spelling of 57148331 in words is "fifty-seven million, one hundred forty-eight thousand, three hundred thirty-one".