57691307 has 2 divisors, whose sum is σ = 57691308. Its totient is φ = 57691306.

The previous prime is 57691273. The next prime is 57691327. The reversal of 57691307 is 70319675.

57691307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57691307 - 2²⁰ = 56642731 is a prime.

It is not a weakly prime, because it can be changed into another prime (57691327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28845653 + 28845654.

It is an arithmetic number, because the mean of its divisors is an integer number (28845654).

Almost surely, 2^57691307 is an apocalyptic number.

57691307 is a deficient number, since it is larger than the sum of its proper divisors (1).

57691307 is an equidigital number, since it uses as much as digits as its factorization.

57691307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 57691307 is about 7595.4793792097. The cubic root of 57691307 is about 386.3997107841.

The spelling of 57691307 in words is "fifty-seven million, six hundred ninety-one thousand, three hundred seven".