22162165 has 8 divisors (see below), whose sum is σ = 26749368. Its totient is φ = 17626560.

The previous prime is 22162163. The next prime is 22162199. The reversal of 22162165 is 56126122.

It can be written as a sum of positive squares in 4 ways, for example, as 3161284 + 19000881 = 1778^2 + 4359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22162165 - 2¹ = 22162163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22162163) 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 7 ways as a sum of consecutive naturals, for example, 11946 + ... + 13675.

It is an arithmetic number, because the mean of its divisors is an integer number (3343671).

Almost surely, 2^22162165 is an apocalyptic number.

It is an amenable number.

22162165 is a deficient number, since it is larger than the sum of its proper divisors (4587203).

22162165 is a wasteful number, since it uses less digits than its factorization.

22162165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25799.

The product of its digits is 1440, while the sum is 25.

The square root of 22162165 is about 4707.6708678496. The cubic root of 22162165 is about 280.8907221476.

Adding to 22162165 its reverse (56126122), we get a palindrome (78288287).

The spelling of 22162165 in words is "twenty-two million, one hundred sixty-two thousand, one hundred sixty-five".