52122161 has 32 divisors (see below), whose sum is σ = 66624768. Its totient is φ = 39686400.

The previous prime is 52122157. The next prime is 52122173. The reversal of 52122161 is 16122125.

It is not a de Polignac number, because 52122161 - 2² = 52122157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52122101) 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, 487070 + ... + 487176.

It is an arithmetic number, because the mean of its divisors is an integer number (2082024).

Almost surely, 2^52122161 is an apocalyptic number.

It is an amenable number.

52122161 is a deficient number, since it is larger than the sum of its proper divisors (14502607).

52122161 is a wasteful number, since it uses less digits than its factorization.

52122161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its digits is 240, while the sum is 20.

The square root of 52122161 is about 7219.5679233594. The cubic root of 52122161 is about 373.5431738230.

Adding to 52122161 its reverse (16122125), we get a palindrome (68244286).

The spelling of 52122161 in words is "fifty-two million, one hundred twenty-two thousand, one hundred sixty-one".