517112172 has 36 divisors (see below), whose sum is σ = 1339030056. Its totient is φ = 168166080.

The previous prime is 517112159. The next prime is 517112179. The reversal of 517112172 is 271211715.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (517112179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173698 + ... + 176649.

Almost surely, 2^517112172 is an apocalyptic number.

It is an amenable number.

517112172 is an abundant number, since it is smaller than the sum of its proper divisors (821917884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

517112172 is a wasteful number, since it uses less digits than its factorization.

517112172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350398 (or 350393 counting only the distinct ones).

The product of its digits is 980, while the sum is 27.

The square root of 517112172 is about 22740.1005274823. The cubic root of 517112172 is about 802.6537766859.

Adding to 517112172 its reverse (271211715), we get a palindrome (788323887).

The spelling of 517112172 in words is "five hundred seventeen million, one hundred twelve thousand, one hundred seventy-two".