45022172 has 24 divisors (see below), whose sum is σ = 89317200. Its totient is φ = 19685376.

The previous prime is 45022169. The next prime is 45022177. The reversal of 45022172 is 27122054.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45022177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21797 + ... + 23772.

It is an arithmetic number, because the mean of its divisors is an integer number (3721550).

Almost surely, 2^45022172 is an apocalyptic number.

It is an amenable number.

45022172 is a deficient number, since it is larger than the sum of its proper divisors (44295028).

45022172 is a wasteful number, since it uses less digits than its factorization.

45022172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45605 (or 45603 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 45022172 is about 6709.8563322921. The cubic root of 45022172 is about 355.7477382191.

It can be divided in two parts, 450 and 22172, that added together give a palindrome (22622).

The spelling of 45022172 in words is "forty-five million, twenty-two thousand, one hundred seventy-two".