511160161 has 6 divisors (see below), whose sum is σ = 523933286. Its totient is φ = 498691200.

The previous prime is 511160137. The next prime is 511160201. The reversal of 511160161 is 161061115.

It can be written as a sum of positive squares in 3 ways, for example, as 2387025 + 508773136 = 1545^2 + 22556^2 .

It is not a de Polignac number, because 511160161 - 2⁷ = 511160033 is a prime.

It is a super-2 number, since 2×511160161² = 522569420387091842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511160561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 150360 + ... + 153721.

Almost surely, 2^511160161 is an apocalyptic number.

It is an amenable number.

511160161 is a deficient number, since it is larger than the sum of its proper divisors (12773125).

511160161 is an equidigital number, since it uses as much as digits as its factorization.

511160161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304163 (or 304122 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 511160161 is about 22608.8513861275. The cubic root of 511160161 is about 799.5623444699.

The spelling of 511160161 in words is "five hundred eleven million, one hundred sixty thousand, one hundred sixty-one".