22549289 has 4 divisors (see below), whose sum is σ = 25770624. Its totient is φ = 19327956.

The previous prime is 22549277. The next prime is 22549291. The reversal of 22549289 is 98294522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98294522 = 2 ⋅49147261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22549289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22549249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1610657 + ... + 1610670.

It is an arithmetic number, because the mean of its divisors is an integer number (6442656).

Almost surely, 2^22549289 is an apocalyptic number.

It is an amenable number.

22549289 is a deficient number, since it is larger than the sum of its proper divisors (3221335).

22549289 is an equidigital number, since it uses as much as digits as its factorization.

22549289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221334.

The product of its digits is 103680, while the sum is 41.

The square root of 22549289 is about 4748.6091647976. The cubic root of 22549289 is about 282.5168037620.

The spelling of 22549289 in words is "twenty-two million, five hundred forty-nine thousand, two hundred eighty-nine".