22452165 has 12 divisors (see below), whose sum is σ = 38917164. Its totient is φ = 11974464.

The previous prime is 22452151. The next prime is 22452173. The reversal of 22452165 is 56125422.

It can be written as a sum of positive squares in 2 ways, for example, as 7568001 + 14884164 = 2751^2 + 3858^2 .

It is not a de Polignac number, because 22452165 - 2¹⁶ = 22386629 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249424 + ... + 249513.

It is an arithmetic number, because the mean of its divisors is an integer number (3243097).

Almost surely, 2^22452165 is an apocalyptic number.

It is an amenable number.

22452165 is a deficient number, since it is larger than the sum of its proper divisors (16464999).

22452165 is a wasteful number, since it uses less digits than its factorization.

22452165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498948 (or 498945 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 22452165 is about 4738.3715557141. The cubic root of 22452165 is about 282.1106024580.

Adding to 22452165 its reverse (56125422), we get a palindrome (78577587).

The spelling of 22452165 in words is "twenty-two million, four hundred fifty-two thousand, one hundred sixty-five".