22538137 has 4 divisors (see below), whose sum is σ = 23518080. Its totient is φ = 21558196.

The previous prime is 22538119. The next prime is 22538203. The reversal of 22538137 is 73183522.

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 22538137 - 2¹⁵ = 22505369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22538099 and 22538108.

It is not an unprimeable number, because it can be changed into a prime (22538437) 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, 489937 + ... + 489982.

It is an arithmetic number, because the mean of its divisors is an integer number (5879520).

Almost surely, 2^22538137 is an apocalyptic number.

It is an amenable number.

22538137 is a deficient number, since it is larger than the sum of its proper divisors (979943).

22538137 is an equidigital number, since it uses as much as digits as its factorization.

22538137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979942.

The product of its digits is 10080, while the sum is 31.

The square root of 22538137 is about 4747.4347810160. The cubic root of 22538137 is about 282.4702221465.

The spelling of 22538137 in words is "twenty-two million, five hundred thirty-eight thousand, one hundred thirty-seven".