518522161 has 16 divisors (see below), whose sum is σ = 535766400. Its totient is φ = 501621120.

The previous prime is 518522153. The next prime is 518522177. The reversal of 518522161 is 161225815.

It is a cyclic number.

It is not a de Polignac number, because 518522161 - 2³ = 518522153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (518522131) 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 15 ways as a sum of consecutive naturals, for example, 2225301 + ... + 2225533.

It is an arithmetic number, because the mean of its divisors is an integer number (33485400).

Almost surely, 2^518522161 is an apocalyptic number.

It is an amenable number.

518522161 is a deficient number, since it is larger than the sum of its proper divisors (17244239).

518522161 is a wasteful number, since it uses less digits than its factorization.

518522161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696.

The product of its digits is 4800, while the sum is 31.

The square root of 518522161 is about 22771.0816826957. The cubic root of 518522161 is about 803.3826359132.

Adding to 518522161 its reverse (161225815), we get a palindrome (679747976).

The spelling of 518522161 in words is "five hundred eighteen million, five hundred twenty-two thousand, one hundred sixty-one".