516656172 has 12 divisors (see below), whose sum is σ = 1205531096. Its totient is φ = 172218720.

The previous prime is 516656171. The next prime is 516656177. The reversal of 516656172 is 271656615.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 516656172.

It is not an unprimeable number, because it can be changed into a prime (516656171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21527329 + ... + 21527352.

Almost surely, 2^516656172 is an apocalyptic number.

It is an amenable number.

516656172 is an abundant number, since it is smaller than the sum of its proper divisors (688874924).

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

516656172 is a wasteful number, since it uses less digits than its factorization.

516656172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43054688 (or 43054686 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 516656172 is about 22730.0719752490. The cubic root of 516656172 is about 802.4177751762.

The spelling of 516656172 in words is "five hundred sixteen million, six hundred fifty-six thousand, one hundred seventy-two".