22537965 has 16 divisors (see below), whose sum is σ = 36236736. Its totient is φ = 11961600.

The previous prime is 22537943. The next prime is 22537967. The reversal of 22537965 is 56973522.

It is not a de Polignac number, because 22537965 - 2²⁰ = 21489389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22537967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396 + ... + 6725.

It is an arithmetic number, because the mean of its divisors is an integer number (2264796).

Almost surely, 2^22537965 is an apocalyptic number.

It is an amenable number.

22537965 is a deficient number, since it is larger than the sum of its proper divisors (13698771).

22537965 is a wasteful number, since it uses less digits than its factorization.

22537965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340.

The product of its digits is 113400, while the sum is 39.

The square root of 22537965 is about 4747.4166659353. The cubic root of 22537965 is about 282.4695035866.

The spelling of 22537965 in words is "twenty-two million, five hundred thirty-seven thousand, nine hundred sixty-five".