22152165 has 24 divisors (see below), whose sum is σ = 41231520. Its totient is φ = 10126368.

The previous prime is 22152149. The next prime is 22152187. The reversal of 22152165 is 56125122.

It is a happy number.

It is not a de Polignac number, because 22152165 - 2⁴ = 22152149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14335 + ... + 15804.

It is an arithmetic number, because the mean of its divisors is an integer number (1717980).

Almost surely, 2^22152165 is an apocalyptic number.

It is an amenable number.

22152165 is a deficient number, since it is larger than the sum of its proper divisors (19079355).

22152165 is a wasteful number, since it uses less digits than its factorization.

22152165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30161 (or 30154 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 22152165 is about 4706.6086516727. The cubic root of 22152165 is about 280.8484680056.

Adding to 22152165 its reverse (56125122), we get a palindrome (78277287).

The spelling of 22152165 in words is "twenty-two million, one hundred fifty-two thousand, one hundred sixty-five".