2172570017 has 2 divisors, whose sum is σ = 2172570018. Its totient is φ = 2172570016.

The previous prime is 2172569977. The next prime is 2172570019. The reversal of 2172570017 is 7100752712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2168206096 + 4363921 = 46564^2 + 2089^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172570017 - 2⁸ = 2172569761 is a prime.

Together with 2172570019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2172570019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086285008 + 1086285009.

It is an arithmetic number, because the mean of its divisors is an integer number (1086285009).

Almost surely, 2^2172570017 is an apocalyptic number.

It is an amenable number.

2172570017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172570017 is an equidigital number, since it uses as much as digits as its factorization.

2172570017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6860, while the sum is 32.

The square root of 2172570017 is about 46610.8358324542. The cubic root of 2172570017 is about 1295.1634915305.

The spelling of 2172570017 in words is "two billion, one hundred seventy-two million, five hundred seventy thousand, seventeen".