57130393 has 2 divisors, whose sum is σ = 57130394. Its totient is φ = 57130392.

The previous prime is 57130373. The next prime is 57130417. The reversal of 57130393 is 39303175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44796249 + 12334144 = 6693^2 + 3512^2 .

It is a cyclic number.

It is not a de Polignac number, because 57130393 - 2¹³ = 57122201 is a prime.

It is not a weakly prime, because it can be changed into another prime (57130373) 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, 28565196 + 28565197.

It is an arithmetic number, because the mean of its divisors is an integer number (28565197).

Almost surely, 2^57130393 is an apocalyptic number.

It is an amenable number.

57130393 is a deficient number, since it is larger than the sum of its proper divisors (1).

57130393 is an equidigital number, since it uses as much as digits as its factorization.

57130393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8505, while the sum is 31.

The square root of 57130393 is about 7558.4649896656. The cubic root of 57130393 is about 385.1433502280.

The spelling of 57130393 in words is "fifty-seven million, one hundred thirty thousand, three hundred ninety-three".