22255172 has 12 divisors (see below), whose sum is σ = 39099900. Its totient is φ = 11083776.

The previous prime is 22255171. The next prime is 22255183. The reversal of 22255172 is 27155222.

It can be written as a sum of positive squares in 2 ways, for example, as 16760836 + 5494336 = 4094^2 + 2344^2 .

It is not an unprimeable number, because it can be changed into a prime (22255171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9797 + ... + 11852.

It is an arithmetic number, because the mean of its divisors is an integer number (3258325).

Almost surely, 2^22255172 is an apocalyptic number.

It is an amenable number.

22255172 is a deficient number, since it is larger than the sum of its proper divisors (16844728).

22255172 is a wasteful number, since it uses less digits than its factorization.

22255172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21910 (or 21908 counting only the distinct ones).

The product of its digits is 2800, while the sum is 26.

The square root of 22255172 is about 4717.5387650766. The cubic root of 22255172 is about 281.2831077404.

The spelling of 22255172 in words is "twenty-two million, two hundred fifty-five thousand, one hundred seventy-two".