57323239 has 2 divisors, whose sum is σ = 57323240. Its totient is φ = 57323238.

The previous prime is 57323237. The next prime is 57323267. The reversal of 57323239 is 93232375.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57323239 - 2¹ = 57323237 is a prime.

It is a super-2 number, since 2×57323239² = 6571907458902242, which contains 22 as substring.

Together with 57323237, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57323237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28661619 + 28661620.

It is an arithmetic number, because the mean of its divisors is an integer number (28661620).

Almost surely, 2^57323239 is an apocalyptic number.

57323239 is a deficient number, since it is larger than the sum of its proper divisors (1).

57323239 is an equidigital number, since it uses as much as digits as its factorization.

57323239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 34.

The square root of 57323239 is about 7571.2111976883. The cubic root of 57323239 is about 385.5762192962.

The spelling of 57323239 in words is "fifty-seven million, three hundred twenty-three thousand, two hundred thirty-nine".