517377317 has 2 divisors, whose sum is σ = 517377318. Its totient is φ = 517377316.

The previous prime is 517377307. The next prime is 517377359. The reversal of 517377317 is 713773715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 467900161 + 49477156 = 21631^2 + 7034^2 .

It is a cyclic number.

It is not a de Polignac number, because 517377317 - 2¹² = 517373221 is a prime.

It is a super-2 number, since 2×517377317² = 535358576292236978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517377307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258688658 + 258688659.

It is an arithmetic number, because the mean of its divisors is an integer number (258688659).

Almost surely, 2^517377317 is an apocalyptic number.

It is an amenable number.

517377317 is a deficient number, since it is larger than the sum of its proper divisors (1).

517377317 is an equidigital number, since it uses as much as digits as its factorization.

517377317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108045, while the sum is 41.

The square root of 517377317 is about 22745.9296798350. The cubic root of 517377317 is about 802.7909379465.

The spelling of 517377317 in words is "five hundred seventeen million, three hundred seventy-seven thousand, three hundred seventeen".