22805137 has 4 divisors (see below), whose sum is σ = 22932720. Its totient is φ = 22677556.

The previous prime is 22805131. The next prime is 22805171. The reversal of 22805137 is 73150822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22805137 - 2²³ = 14416529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22805131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63523 + ... + 63880.

It is an arithmetic number, because the mean of its divisors is an integer number (5733180).

Almost surely, 2^22805137 is an apocalyptic number.

It is an amenable number.

22805137 is a deficient number, since it is larger than the sum of its proper divisors (127583).

22805137 is a wasteful number, since it uses less digits than its factorization.

22805137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127582.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 22805137 is about 4775.4724373616. The cubic root of 22805137 is about 283.5812822227.

Adding to 22805137 its reverse (73150822), we get a palindrome (95955959).

The spelling of 22805137 in words is "twenty-two million, eight hundred five thousand, one hundred thirty-seven".