571916897 has 2 divisors, whose sum is σ = 571916898. Its totient is φ = 571916896.

The previous prime is 571916791. The next prime is 571916909. The reversal of 571916897 is 798619175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373416976 + 198499921 = 19324^2 + 14089^2 .

It is a cyclic number.

It is not a de Polignac number, because 571916897 - 2¹⁸ = 571654753 is a prime.

It is not a weakly prime, because it can be changed into another prime (571916497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285958448 + 285958449.

It is an arithmetic number, because the mean of its divisors is an integer number (285958449).

Almost surely, 2^571916897 is an apocalyptic number.

It is an amenable number.

571916897 is a deficient number, since it is larger than the sum of its proper divisors (1).

571916897 is an equidigital number, since it uses as much as digits as its factorization.

571916897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 53.

The square root of 571916897 is about 23914.7840676014. The cubic root of 571916897 is about 830.0628476144.

The spelling of 571916897 in words is "five hundred seventy-one million, nine hundred sixteen thousand, eight hundred ninety-seven".