2517317613 has 12 divisors (see below), whose sum is σ = 3669485820. Its totient is φ = 1662814656.

The previous prime is 2517317609. The next prime is 2517317617. The reversal of 2517317613 is 3167137152.

2517317613 is a `hidden beast` number, since 2 + 5 + 1 + 7 + 31 + 7 + 613 = 666.

It is an interprime number because it is at equal distance from previous prime (2517317609) and next prime (2517317617).

It can be written as a sum of positive squares in 2 ways, for example, as 914276169 + 1603041444 = 30237^2 + 40038^2 .

It is not a de Polignac number, because 2517317613 - 2² = 2517317609 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2517317617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1282056 + ... + 1284017.

It is an arithmetic number, because the mean of its divisors is an integer number (305790485).

Almost surely, 2^2517317613 is an apocalyptic number.

It is an amenable number.

2517317613 is a deficient number, since it is larger than the sum of its proper divisors (1152168207).

2517317613 is a wasteful number, since it uses less digits than its factorization.

2517317613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566188 (or 2566185 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 2517317613 is about 50172.8772645141. The cubic root of 2517317613 is about 1360.3354155759.

The spelling of 2517317613 in words is "two billion, five hundred seventeen million, three hundred seventeen thousand, six hundred thirteen".