517005217 has 4 divisors (see below), whose sum is σ = 528005376. Its totient is φ = 506005060.

The previous prime is 517005191. The next prime is 517005227. The reversal of 517005217 is 712500715.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-517005217 is a prime.

It is a Duffinian number.

517005217 is a modest number, since divided by 5217 gives 517 as remainder.

It is not an unprimeable number, because it can be changed into a prime (517005227) 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 in 3 ways as a sum of consecutive naturals, for example, 5500009 + ... + 5500102.

It is an arithmetic number, because the mean of its divisors is an integer number (132001344).

Almost surely, 2^517005217 is an apocalyptic number.

It is an amenable number.

517005217 is a deficient number, since it is larger than the sum of its proper divisors (11000159).

517005217 is a wasteful number, since it uses less digits than its factorization.

517005217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000158.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 517005217 is about 22737.7487232136. The cubic root of 517005217 is about 802.5984348867.

The spelling of 517005217 in words is "five hundred seventeen million, five thousand, two hundred seventeen".