22245563 has 4 divisors (see below), whose sum is σ = 22257168. Its totient is φ = 22233960.

The previous prime is 22245557. The next prime is 22245607. The reversal of 22245563 is 36554222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22245563 - 2¹⁰ = 22244539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22245533) 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, 2168 + ... + 7013.

It is an arithmetic number, because the mean of its divisors is an integer number (5564292).

Almost surely, 2^22245563 is an apocalyptic number.

22245563 is a deficient number, since it is larger than the sum of its proper divisors (11605).

22245563 is an equidigital number, since it uses as much as digits as its factorization.

22245563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11604.

The product of its digits is 14400, while the sum is 29.

The square root of 22245563 is about 4716.5202215193. The cubic root of 22245563 is about 281.2426191973.

Adding to 22245563 its reverse (36554222), we get a palindrome (58799785).

The spelling of 22245563 in words is "twenty-two million, two hundred forty-five thousand, five hundred sixty-three".