517206172 has 36 divisors (see below), whose sum is σ = 1059408840. Its totient is φ = 220286304.

The previous prime is 517206167. The next prime is 517206211. The reversal of 517206172 is 271602715.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 23854 + ... + 40042.

Almost surely, 2^517206172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 517206172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529704420).

517206172 is an abundant number, since it is smaller than the sum of its proper divisors (542202668).

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

517206172 is a wasteful number, since it uses less digits than its factorization.

517206172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16370 (or 16361 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 517206172 is about 22742.1672669955. The cubic root of 517206172 is about 802.7024088705.

Adding to 517206172 its reverse (271602715), we get a palindrome (788808887).

The spelling of 517206172 in words is "five hundred seventeen million, two hundred six thousand, one hundred seventy-two".