516985161 has 32 divisors (see below), whose sum is σ = 875639808. Its totient is φ = 263490240.

The previous prime is 516985141. The next prime is 516985169. The reversal of 516985161 is 161589615.

It is not a de Polignac number, because 516985161 - 2⁷ = 516985033 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (516985169) 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 31 ways as a sum of consecutive naturals, for example, 8871 + ... + 33356.

It is an arithmetic number, because the mean of its divisors is an integer number (27363744).

Almost surely, 2^516985161 is an apocalyptic number.

It is an amenable number.

516985161 is a deficient number, since it is larger than the sum of its proper divisors (358654647).

516985161 is a wasteful number, since it uses less digits than its factorization.

516985161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42301.

The product of its digits is 64800, while the sum is 42.

The square root of 516985161 is about 22737.3076902258. The cubic root of 516985161 is about 802.5880564470.

The spelling of 516985161 in words is "five hundred sixteen million, nine hundred eighty-five thousand, one hundred sixty-one".