22144455 has 32 divisors (see below), whose sum is σ = 41688000. Its totient is φ = 11114496.

The previous prime is 22144453. The next prime is 22144471. The reversal of 22144455 is 55444122.

22144455 is a `hidden beast` number, since 2 + 214 + 445 + 5 = 666.

It is not a de Polignac number, because 22144455 - 2¹ = 22144453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2530 + ... + 7119.

It is an arithmetic number, because the mean of its divisors is an integer number (1302750).

Almost surely, 2^22144455 is an apocalyptic number.

22144455 is a deficient number, since it is larger than the sum of its proper divisors (19543545).

22144455 is a wasteful number, since it uses less digits than its factorization.

22144455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9680 (or 9674 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 22144455 is about 4705.7895193049. The cubic root of 22144455 is about 280.8158813795.

Adding to 22144455 its reverse (55444122), we get a palindrome (77588577).

The spelling of 22144455 in words is "twenty-two million, one hundred forty-four thousand, four hundred fifty-five".