517288091 has 6 divisors (see below), whose sum is σ = 545947092. Its totient is φ = 490062060.

The previous prime is 517288069. The next prime is 517288097. The reversal of 517288091 is 190882715.

It is not a de Polignac number, because 517288091 - 2⁶ = 517288027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (517288097) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 716105 + ... + 716826.

It is an arithmetic number, because the mean of its divisors is an integer number (90991182).

Almost surely, 2^517288091 is an apocalyptic number.

517288091 is a deficient number, since it is larger than the sum of its proper divisors (28659001).

517288091 is a wasteful number, since it uses less digits than its factorization.

517288091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432969 (or 1432950 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 517288091 is about 22743.9682333580. The cubic root of 517288091 is about 802.7447859797.

The spelling of 517288091 in words is "five hundred seventeen million, two hundred eighty-eight thousand, ninety-one".