57785393 has 2 divisors, whose sum is σ = 57785394. Its totient is φ = 57785392.

The previous prime is 57785383. The next prime is 57785401. The reversal of 57785393 is 39358775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49392784 + 8392609 = 7028^2 + 2897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57785393 is a prime.

It is not a weakly prime, because it can be changed into another prime (57785353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28892696 + 28892697.

It is an arithmetic number, because the mean of its divisors is an integer number (28892697).

Almost surely, 2^57785393 is an apocalyptic number.

It is an amenable number.

57785393 is a deficient number, since it is larger than the sum of its proper divisors (1).

57785393 is an equidigital number, since it uses as much as digits as its factorization.

57785393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 47.

The square root of 57785393 is about 7601.6704085352. The cubic root of 57785393 is about 386.6096503161.

The spelling of 57785393 in words is "fifty-seven million, seven hundred eighty-five thousand, three hundred ninety-three".