516989081 has 16 divisors (see below), whose sum is σ = 596284416. Its totient is φ = 439072656.

The previous prime is 516989063. The next prime is 516989087. The reversal of 516989081 is 180989615.

It is a cyclic number.

It is not a de Polignac number, because 516989081 - 2¹⁰ = 516988057 is a prime.

It is a super-2 number, since 2×516989081² = 534555419746449122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (516989087) 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 15 ways as a sum of consecutive naturals, for example, 545450 + ... + 546396.

It is an arithmetic number, because the mean of its divisors is an integer number (37267776).

Almost surely, 2^516989081 is an apocalyptic number.

It is an amenable number.

516989081 is a deficient number, since it is larger than the sum of its proper divisors (79295335).

516989081 is a wasteful number, since it uses less digits than its factorization.

516989081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 516989081 is about 22737.3938920009. The cubic root of 516989081 is about 802.5900849625.

The spelling of 516989081 in words is "five hundred sixteen million, nine hundred eighty-nine thousand, eighty-one".