57351691 has 2 divisors, whose sum is σ = 57351692. Its totient is φ = 57351690.

The previous prime is 57351683. The next prime is 57351731. The reversal of 57351691 is 19615375.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57351691 - 2³ = 57351683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57351691.

It is not a weakly prime, because it can be changed into another prime (57351631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28675845 + 28675846.

It is an arithmetic number, because the mean of its divisors is an integer number (28675846).

Almost surely, 2^57351691 is an apocalyptic number.

57351691 is a deficient number, since it is larger than the sum of its proper divisors (1).

57351691 is an equidigital number, since it uses as much as digits as its factorization.

57351691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350, while the sum is 37.

The square root of 57351691 is about 7573.0899241987. The cubic root of 57351691 is about 385.6400014566.

The spelling of 57351691 in words is "fifty-seven million, three hundred fifty-one thousand, six hundred ninety-one".