57383281 has 2 divisors, whose sum is σ = 57383282. Its totient is φ = 57383280.

The previous prime is 57383273. The next prime is 57383317. The reversal of 57383281 is 18238375.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56490256 + 893025 = 7516^2 + 945^2 .

It is a cyclic number.

It is not a de Polignac number, because 57383281 - 2³ = 57383273 is a prime.

It is a super-2 number, since 2×57383281² = 6585681876649922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57383281.

It is not a weakly prime, because it can be changed into another prime (57383881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28691640 + 28691641.

It is an arithmetic number, because the mean of its divisors is an integer number (28691641).

Almost surely, 2^57383281 is an apocalyptic number.

It is an amenable number.

57383281 is a deficient number, since it is larger than the sum of its proper divisors (1).

57383281 is an equidigital number, since it uses as much as digits as its factorization.

57383281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 57383281 is about 7575.1753115027. The cubic root of 57383281 is about 385.7107935081.

The spelling of 57383281 in words is "fifty-seven million, three hundred eighty-three thousand, two hundred eighty-one".