57345997 has 2 divisors, whose sum is σ = 57345998. Its totient is φ = 57345996.

The previous prime is 57345983. The next prime is 57346007. The reversal of 57345997 is 79954375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50965321 + 6380676 = 7139^2 + 2526^2 .

It is a cyclic number.

It is not a de Polignac number, because 57345997 - 2¹⁵ = 57313229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57345997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57345697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28672998 + 28672999.

It is an arithmetic number, because the mean of its divisors is an integer number (28672999).

Almost surely, 2^57345997 is an apocalyptic number.

It is an amenable number.

57345997 is a deficient number, since it is larger than the sum of its proper divisors (1).

57345997 is an equidigital number, since it uses as much as digits as its factorization.

57345997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1190700, while the sum is 49.

The square root of 57345997 is about 7572.7139784888. The cubic root of 57345997 is about 385.6272386429.

The spelling of 57345997 in words is "fifty-seven million, three hundred forty-five thousand, nine hundred ninety-seven".