57090331 has 2 divisors, whose sum is σ = 57090332. Its totient is φ = 57090330.

The previous prime is 57090329. The next prime is 57090343. The reversal of 57090331 is 13309075.

57090331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57090331 - 2¹ = 57090329 is a prime.

It is a super-2 number, since 2×57090331² = 6518611787379122, which contains 22 as substring.

Together with 57090329, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57090331.

It is not a weakly prime, because it can be changed into another prime (57090311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28545165 + 28545166.

It is an arithmetic number, because the mean of its divisors is an integer number (28545166).

Almost surely, 2^57090331 is an apocalyptic number.

57090331 is a deficient number, since it is larger than the sum of its proper divisors (1).

57090331 is an equidigital number, since it uses as much as digits as its factorization.

57090331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 57090331 is about 7555.8143836386. The cubic root of 57090331 is about 385.0533034648.

The spelling of 57090331 in words is "fifty-seven million, ninety thousand, three hundred thirty-one".