22205547 has 48 divisors (see below), whose sum is σ = 41583360. Its totient is φ = 11088576.

The previous prime is 22205543. The next prime is 22205549. The reversal of 22205547 is 74550222.

It is not a de Polignac number, because 22205547 - 2² = 22205543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22205547.

It is not an unprimeable number, because it can be changed into a prime (22205543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14848 + ... + 16274.

It is an arithmetic number, because the mean of its divisors is an integer number (866320).

Almost surely, 2^22205547 is an apocalyptic number.

22205547 is a deficient number, since it is larger than the sum of its proper divisors (19377813).

22205547 is a wasteful number, since it uses less digits than its factorization.

22205547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 22205547 is about 4712.2762015824. The cubic root of 22205547 is about 281.0738820347.

Adding to 22205547 its reverse (74550222), we get a palindrome (96755769).

The spelling of 22205547 in words is "twenty-two million, two hundred five thousand, five hundred forty-seven".