22204573 has 4 divisors (see below), whose sum is σ = 22260348. Its totient is φ = 22148800.

The previous prime is 22204571. The next prime is 22204577. The reversal of 22204573 is 37540222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37540222 = 2 ⋅18770111.

It can be written as a sum of positive squares in 2 ways, for example, as 20052484 + 2152089 = 4478^2 + 1467^2 .

It is a cyclic number.

It is not a de Polignac number, because 22204573 - 2¹ = 22204571 is a prime.

It is a super-2 number, since 2×22204573² = 986086124224658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22204571) 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, 27286 + ... + 28087.

It is an arithmetic number, because the mean of its divisors is an integer number (5565087).

Almost surely, 2^22204573 is an apocalyptic number.

It is an amenable number.

22204573 is a deficient number, since it is larger than the sum of its proper divisors (55775).

22204573 is an equidigital number, since it uses as much as digits as its factorization.

22204573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55774.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 22204573 is about 4712.1728533661. The cubic root of 22204573 is about 281.0697724015.

Adding to 22204573 its reverse (37540222), we get a palindrome (59744795).

The spelling of 22204573 in words is "twenty-two million, two hundred four thousand, five hundred seventy-three".