571383961 has 2 divisors, whose sum is σ = 571383962. Its totient is φ = 571383960.

The previous prime is 571383947. The next prime is 571383977. The reversal of 571383961 is 169383175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 451350025 + 120033936 = 21245^2 + 10956^2 .

It is a cyclic number.

It is not a de Polignac number, because 571383961 - 2⁵ = 571383929 is a prime.

It is not a weakly prime, because it can be changed into another prime (571386961) 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, 285691980 + 285691981.

It is an arithmetic number, because the mean of its divisors is an integer number (285691981).

Almost surely, 2^571383961 is an apocalyptic number.

It is an amenable number.

571383961 is a deficient number, since it is larger than the sum of its proper divisors (1).

571383961 is an equidigital number, since it uses as much as digits as its factorization.

571383961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 571383961 is about 23903.6390744171. The cubic root of 571383961 is about 829.8049384359.

The spelling of 571383961 in words is "five hundred seventy-one million, three hundred eighty-three thousand, nine hundred sixty-one".