57056331 has 8 divisors (see below), whose sum is σ = 78131344. Its totient is φ = 37009440.

The previous prime is 57056323. The next prime is 57056339. The reversal of 57056331 is 13365075.

It is an interprime number because it is at equal distance from previous prime (57056323) and next prime (57056339).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57056331 - 2³ = 57056323 is a prime.

It is a super-2 number, since 2×57056331² = 6510849814363122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57056339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256900 + ... + 257121.

It is an arithmetic number, because the mean of its divisors is an integer number (9766418).

Almost surely, 2^57056331 is an apocalyptic number.

57056331 is a deficient number, since it is larger than the sum of its proper divisors (21075013).

57056331 is a wasteful number, since it uses less digits than its factorization.

57056331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514061.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 57056331 is about 7553.5641256297. The cubic root of 57056331 is about 384.9768491167.

The spelling of 57056331 in words is "fifty-seven million, fifty-six thousand, three hundred thirty-one".