57807493 has 2 divisors, whose sum is σ = 57807494. Its totient is φ = 57807492.

The previous prime is 57807457. The next prime is 57807517. The reversal of 57807493 is 39470875.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56821444 + 986049 = 7538^2 + 993^2 .

It is a cyclic number.

It is not a de Polignac number, because 57807493 - 2²¹ = 55710341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57807413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28903746 + 28903747.

It is an arithmetic number, because the mean of its divisors is an integer number (28903747).

Almost surely, 2^57807493 is an apocalyptic number.

It is an amenable number.

57807493 is a deficient number, since it is larger than the sum of its proper divisors (1).

57807493 is an equidigital number, since it uses as much as digits as its factorization.

57807493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 57807493 is about 7603.1238974516. The cubic root of 57807493 is about 386.6589302686.

The spelling of 57807493 in words is "fifty-seven million, eight hundred seven thousand, four hundred ninety-three".