22540173 has 4 divisors (see below), whose sum is σ = 30053568. Its totient is φ = 15026780.

The previous prime is 22540169. The next prime is 22540237. The reversal of 22540173 is 37104522.

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 22540173 - 2² = 22540169 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540153) 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 3 ways as a sum of consecutive naturals, for example, 3756693 + ... + 3756698.

It is an arithmetic number, because the mean of its divisors is an integer number (7513392).

Almost surely, 2^22540173 is an apocalyptic number.

It is an amenable number.

22540173 is a deficient number, since it is larger than the sum of its proper divisors (7513395).

22540173 is an equidigital number, since it uses as much as digits as its factorization.

22540173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513394.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 22540173 is about 4747.6492077659. The cubic root of 22540173 is about 282.4787276122.

Adding to 22540173 its reverse (37104522), we get a palindrome (59644695).

The spelling of 22540173 in words is "twenty-two million, five hundred forty thousand, one hundred seventy-three".