512125161 has 4 divisors (see below), whose sum is σ = 682833552. Its totient is φ = 341416772.

The previous prime is 512125139. The next prime is 512125213. The reversal of 512125161 is 161521215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 512125161 - 2⁹ = 512124649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (512125111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85354191 + ... + 85354196.

It is an arithmetic number, because the mean of its divisors is an integer number (170708388).

Almost surely, 2^512125161 is an apocalyptic number.

It is an amenable number.

512125161 is a deficient number, since it is larger than the sum of its proper divisors (170708391).

512125161 is a wasteful number, since it uses less digits than its factorization.

512125161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170708390.

The product of its digits is 600, while the sum is 24.

The square root of 512125161 is about 22630.1825224632. The cubic root of 512125161 is about 800.0651827097.

Adding to 512125161 its reverse (161521215), we get a palindrome (673646376).

It can be divided in two parts, 51 and 2125161, that added together give a palindrome (2125212).

The spelling of 512125161 in words is "five hundred twelve million, one hundred twenty-five thousand, one hundred sixty-one".