516565161 has 32 divisors (see below), whose sum is σ = 875692800. Its totient is φ = 294814080.

The previous prime is 516565157. The next prime is 516565169. The reversal of 516565161 is 161565615.

It is not a de Polignac number, because 516565161 - 2² = 516565157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (516565169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248635 + ... + 250703.

It is an arithmetic number, because the mean of its divisors is an integer number (27365400).

Almost surely, 2^516565161 is an apocalyptic number.

It is an amenable number.

516565161 is a deficient number, since it is larger than the sum of its proper divisors (359127639).

516565161 is a wasteful number, since it uses less digits than its factorization.

516565161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406 (or 3400 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 516565161 is about 22728.0698916560. The cubic root of 516565161 is about 802.3706560690.

The spelling of 516565161 in words is "five hundred sixteen million, five hundred sixty-five thousand, one hundred sixty-one".