22243549 has 8 divisors (see below), whose sum is σ = 23332608. Its totient is φ = 21180240.

The previous prime is 22243541. The next prime is 22243579. The reversal of 22243549 is 94534222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22243549 - 2³ = 22243541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22243549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22243541) 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, 4657 + ... + 8134.

It is an arithmetic number, because the mean of its divisors is an integer number (2916576).

Almost surely, 2^22243549 is an apocalyptic number.

It is an amenable number.

22243549 is a deficient number, since it is larger than the sum of its proper divisors (1089059).

22243549 is a wasteful number, since it uses less digits than its factorization.

22243549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12875.

The product of its digits is 17280, while the sum is 31.

The square root of 22243549 is about 4716.3067118244. The cubic root of 22243549 is about 281.2341315162.

The spelling of 22243549 in words is "twenty-two million, two hundred forty-three thousand, five hundred forty-nine".