22205445 has 16 divisors (see below), whose sum is σ = 36754560. Its totient is φ = 11434304.

The previous prime is 22205441. The next prime is 22205453. The reversal of 22205445 is 54450222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22205445 - 2² = 22205441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22205441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25089 + ... + 25958.

It is an arithmetic number, because the mean of its divisors is an integer number (2297160).

Almost surely, 2^22205445 is an apocalyptic number.

It is an amenable number.

22205445 is a deficient number, since it is larger than the sum of its proper divisors (14549115).

22205445 is a wasteful number, since it uses less digits than its factorization.

22205445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51084.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 22205445 is about 4712.2653787748. The cubic root of 22205445 is about 281.0734516681.

Adding to 22205445 its reverse (54450222), we get a palindrome (76655667).

The spelling of 22205445 in words is "twenty-two million, two hundred five thousand, four hundred forty-five".