516979281 has 96 divisors (see below), whose sum is σ = 911474688. Its totient is φ = 254741760.

The previous prime is 516979279. The next prime is 516979289. The reversal of 516979281 is 182979615.

It is not a de Polignac number, because 516979281 - 2¹ = 516979279 is a prime.

It is a super-2 number, since 2×516979281² = 534535153966553922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 516979281.

It is not an unprimeable number, because it can be changed into a prime (516979289) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4070640 + ... + 4070766.

It is an arithmetic number, because the mean of its divisors is an integer number (9494528).

Almost surely, 2^516979281 is an apocalyptic number.

It is an amenable number.

516979281 is a deficient number, since it is larger than the sum of its proper divisors (394495407).

516979281 is a wasteful number, since it uses less digits than its factorization.

516979281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 218 counting only the distinct ones).

The product of its digits is 272160, while the sum is 48.

The square root of 516979281 is about 22737.1783869503. The cubic root of 516979281 is about 802.5850136546.

The spelling of 516979281 in words is "five hundred sixteen million, nine hundred seventy-nine thousand, two hundred eighty-one".