57716387 has 2 divisors, whose sum is σ = 57716388. Its totient is φ = 57716386.

The previous prime is 57716383. The next prime is 57716401. The reversal of 57716387 is 78361775.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57716387 - 2² = 57716383 is a prime.

It is not a weakly prime, because it can be changed into another prime (57716381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28858193 + 28858194.

It is an arithmetic number, because the mean of its divisors is an integer number (28858194).

Almost surely, 2^57716387 is an apocalyptic number.

57716387 is a deficient number, since it is larger than the sum of its proper divisors (1).

57716387 is an equidigital number, since it uses as much as digits as its factorization.

57716387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 44.

The square root of 57716387 is about 7597.1301818516. The cubic root of 57716387 is about 386.4556955375.

The spelling of 57716387 in words is "fifty-seven million, seven hundred sixteen thousand, three hundred eighty-seven".