516823172 has 6 divisors (see below), whose sum is σ = 904440558. Its totient is φ = 258411584.

The previous prime is 516823157. The next prime is 516823183. The reversal of 516823172 is 271328615.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 447999556 + 68823616 = 21166^2 + 8296^2 .

It is a super-2 number, since 2×516823172² = 534212382232283168, which contains 22 as substring.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64602893 + ... + 64602900.

It is an arithmetic number, because the mean of its divisors is an integer number (150740093).

Almost surely, 2^516823172 is an apocalyptic number.

It is an amenable number.

516823172 is a deficient number, since it is larger than the sum of its proper divisors (387617386).

516823172 is a wasteful number, since it uses less digits than its factorization.

516823172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129205797 (or 129205795 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 516823172 is about 22733.7452259851. The cubic root of 516823172 is about 802.5042216630.

The spelling of 516823172 in words is "five hundred sixteen million, eight hundred twenty-three thousand, one hundred seventy-two".