22172055 has 16 divisors (see below), whose sum is σ = 35544960. Its totient is φ = 11801888.

The previous prime is 22172027. The next prime is 22172057. The reversal of 22172055 is 55027122.

It is a cyclic number.

It is not a de Polignac number, because 22172055 - 2¹⁰ = 22171031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22172057) 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, 8764 + ... + 11006.

It is an arithmetic number, because the mean of its divisors is an integer number (2221560).

Almost surely, 2^22172055 is an apocalyptic number.

22172055 is a deficient number, since it is larger than the sum of its proper divisors (13372905).

22172055 is a wasteful number, since it uses less digits than its factorization.

22172055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 22172055 is about 4708.7211639680. The cubic root of 22172055 is about 280.9324989943.

Adding to 22172055 its reverse (55027122), we get a palindrome (77199177).

The spelling of 22172055 in words is "twenty-two million, one hundred seventy-two thousand, fifty-five".