512155161 has 24 divisors (see below), whose sum is σ = 846094080. Its totient is φ = 292441536.

The previous prime is 512155159. The next prime is 512155177. The reversal of 512155161 is 161551215.

512155161 is a `hidden beast` number, since 51 + 2 + 1 + 551 + 61 = 666.

It is not a de Polignac number, because 512155161 - 2¹ = 512155159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (512155121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123520 + ... + 127598.

It is an arithmetic number, because the mean of its divisors is an integer number (35253920).

Almost surely, 2^512155161 is an apocalyptic number.

It is an amenable number.

512155161 is a deficient number, since it is larger than the sum of its proper divisors (333938919).

512155161 is a wasteful number, since it uses less digits than its factorization.

512155161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6085 (or 6082 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

The square root of 512155161 is about 22630.8453443525. The cubic root of 512155161 is about 800.0808048588.

The spelling of 512155161 in words is "five hundred twelve million, one hundred fifty-five thousand, one hundred sixty-one".