22171045 has 16 divisors (see below), whose sum is σ = 29578752. Its totient is φ = 15842880.

The previous prime is 22171033. The next prime is 22171063. The reversal of 22171045 is 54017122.

It is a happy number.

It is not a de Polignac number, because 22171045 - 2¹¹ = 22168997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3487 + ... + 7516.

It is an arithmetic number, because the mean of its divisors is an integer number (1848672).

Almost surely, 2^22171045 is an apocalyptic number.

It is an amenable number.

22171045 is a deficient number, since it is larger than the sum of its proper divisors (7407707).

22171045 is a wasteful number, since it uses less digits than its factorization.

22171045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11052.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 22171045 is about 4708.6139149435. The cubic root of 22171045 is about 280.9282331721.

Adding to 22171045 its reverse (54017122), we get a palindrome (76188167).

The spelling of 22171045 in words is "twenty-two million, one hundred seventy-one thousand, forty-five".