517481317 has 2 divisors, whose sum is σ = 517481318. Its totient is φ = 517481316.

The previous prime is 517481311. The next prime is 517481351. The reversal of 517481317 is 713184715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 512614881 + 4866436 = 22641^2 + 2206^2 .

It is a cyclic number.

It is not a de Polignac number, because 517481317 - 2⁷ = 517481189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517481311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258740658 + 258740659.

It is an arithmetic number, because the mean of its divisors is an integer number (258740659).

Almost surely, 2^517481317 is an apocalyptic number.

It is an amenable number.

517481317 is a deficient number, since it is larger than the sum of its proper divisors (1).

517481317 is an equidigital number, since it uses as much as digits as its factorization.

517481317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 37.

The square root of 517481317 is about 22748.2156882688. The cubic root of 517481317 is about 802.8447250385.

The spelling of 517481317 in words is "five hundred seventeen million, four hundred eighty-one thousand, three hundred seventeen".