517320017 has 2 divisors, whose sum is σ = 517320018. Its totient is φ = 517320016.

The previous prime is 517320007. The next prime is 517320031. The reversal of 517320017 is 710023715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380874256 + 136445761 = 19516^2 + 11681^2 .

It is a cyclic number.

It is not a de Polignac number, because 517320017 - 2¹⁶ = 517254481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (517320007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258660008 + 258660009.

It is an arithmetic number, because the mean of its divisors is an integer number (258660009).

Almost surely, 2^517320017 is an apocalyptic number.

It is an amenable number.

517320017 is a deficient number, since it is larger than the sum of its proper divisors (1).

517320017 is an equidigital number, since it uses as much as digits as its factorization.

517320017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 517320017 is about 22744.6700789438. The cubic root of 517320017 is about 802.7613002479.

The spelling of 517320017 in words is "five hundred seventeen million, three hundred twenty thousand, seventeen".