57731693 has 2 divisors, whose sum is σ = 57731694. Its totient is φ = 57731692.

The previous prime is 57731683. The next prime is 57731753. The reversal of 57731693 is 39613775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55547209 + 2184484 = 7453^2 + 1478^2 .

It is a cyclic number.

It is not a de Polignac number, because 57731693 - 2⁶ = 57731629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57731693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57731683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28865846 + 28865847.

It is an arithmetic number, because the mean of its divisors is an integer number (28865847).

Almost surely, 2^57731693 is an apocalyptic number.

It is an amenable number.

57731693 is a deficient number, since it is larger than the sum of its proper divisors (1).

57731693 is an equidigital number, since it uses as much as digits as its factorization.

57731693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 41.

The square root of 57731693 is about 7598.1374691433. The cubic root of 57731693 is about 386.4898543405.

The spelling of 57731693 in words is "fifty-seven million, seven hundred thirty-one thousand, six hundred ninety-three".