2571223117 has 2 divisors, whose sum is σ = 2571223118. Its totient is φ = 2571223116.

The previous prime is 2571223097. The next prime is 2571223133. The reversal of 2571223117 is 7113221752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1604883721 + 966339396 = 40061^2 + 31086^2 .

It is a cyclic number.

It is not a de Polignac number, because 2571223117 - 2⁷ = 2571222989 is a prime.

It is a super-2 number, since 2×2571223117² = 13222376634790391378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2571223147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1285611558 + 1285611559.

It is an arithmetic number, because the mean of its divisors is an integer number (1285611559).

Almost surely, 2^2571223117 is an apocalyptic number.

It is an amenable number.

2571223117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2571223117 is an equidigital number, since it uses as much as digits as its factorization.

2571223117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 31.

The square root of 2571223117 is about 50707.2294352590. The cubic root of 2571223117 is about 1369.9769326750.

Adding to 2571223117 its reverse (7113221752), we get a palindrome (9684444869).

The spelling of 2571223117 in words is "two billion, five hundred seventy-one million, two hundred twenty-three thousand, one hundred seventeen".