57399217 has 2 divisors, whose sum is σ = 57399218. Its totient is φ = 57399216.

The previous prime is 57399203. The next prime is 57399227. The reversal of 57399217 is 71299375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49787136 + 7612081 = 7056^2 + 2759^2 .

It is a cyclic number.

It is not a de Polignac number, because 57399217 - 2¹¹ = 57397169 is a prime.

It is a super-2 number, since 2×57399217² = 6589340224426178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57399227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28699608 + 28699609.

It is an arithmetic number, because the mean of its divisors is an integer number (28699609).

Almost surely, 2^57399217 is an apocalyptic number.

It is an amenable number.

57399217 is a deficient number, since it is larger than the sum of its proper divisors (1).

57399217 is an equidigital number, since it uses as much as digits as its factorization.

57399217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 43.

The square root of 57399217 is about 7576.2270953292. The cubic root of 57399217 is about 385.7464956510.

The spelling of 57399217 in words is "fifty-seven million, three hundred ninety-nine thousand, two hundred seventeen".