516212817 has 8 divisors (see below), whose sum is σ = 689409024. Its totient is φ = 343579248.

The previous prime is 516212783. The next prime is 516212819. The reversal of 516212817 is 718212615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 516212817 - 2²⁰ = 515164241 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (516212819) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 138513 + ... + 142190.

It is an arithmetic number, because the mean of its divisors is an integer number (86176128).

Almost surely, 2^516212817 is an apocalyptic number.

It is an amenable number.

516212817 is a deficient number, since it is larger than the sum of its proper divisors (173196207).

516212817 is a wasteful number, since it uses less digits than its factorization.

516212817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281319.

The product of its digits is 6720, while the sum is 33.

The square root of 516212817 is about 22720.3172733129. The cubic root of 516212817 is about 802.1881848726.

The spelling of 516212817 in words is "five hundred sixteen million, two hundred twelve thousand, eight hundred seventeen".