22530605 has 4 divisors (see below), whose sum is σ = 27036732. Its totient is φ = 18024480.

The previous prime is 22530601. The next prime is 22530619. The reversal of 22530605 is 50603522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50603522 = 2 ⋅25301761.

It can be written as a sum of positive squares in 2 ways, for example, as 2621161 + 19909444 = 1619^2 + 4462^2 .

It is not a de Polignac number, because 22530605 - 2² = 22530601 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22530601) 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, 2253056 + ... + 2253065.

It is an arithmetic number, because the mean of its divisors is an integer number (6759183).

Almost surely, 2^22530605 is an apocalyptic number.

It is an amenable number.

22530605 is a deficient number, since it is larger than the sum of its proper divisors (4506127).

22530605 is an equidigital number, since it uses as much as digits as its factorization.

22530605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506126.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 22530605 is about 4746.6414442214. The cubic root of 22530605 is about 282.4387524830.

The spelling of 22530605 in words is "twenty-two million, five hundred thirty thousand, six hundred five".