52222161 has 16 divisors (see below), whose sum is σ = 71314880. Its totient is φ = 33981120.

The previous prime is 52222153. The next prime is 52222193. The reversal of 52222161 is 16122225.

It is a happy number.

52222161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52222161 - 2³ = 52222153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52222111) 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, 24411 + ... + 26463.

It is an arithmetic number, because the mean of its divisors is an integer number (4457180).

Almost surely, 2^52222161 is an apocalyptic number.

It is an amenable number.

52222161 is a deficient number, since it is larger than the sum of its proper divisors (19092719).

52222161 is a wasteful number, since it uses less digits than its factorization.

52222161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256.

The product of its digits is 480, while the sum is 21.

The square root of 52222161 is about 7226.4902269359. The cubic root of 52222161 is about 373.7819107514.

Adding to 52222161 its reverse (16122225), we get a palindrome (68344386).

The spelling of 52222161 in words is "fifty-two million, two hundred twenty-two thousand, one hundred sixty-one".