22104481 has 4 divisors (see below), whose sum is σ = 25262272. Its totient is φ = 18946692.

The previous prime is 22104463. The next prime is 22104491. The reversal of 22104481 is 18440122.

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: 18440122 = 2 ⋅9220061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22104481 is a prime.

It is a super-2 number, since 2×22104481² = 977216160558722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22104431) 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, 1578885 + ... + 1578898.

It is an arithmetic number, because the mean of its divisors is an integer number (6315568).

Almost surely, 2^22104481 is an apocalyptic number.

It is an amenable number.

22104481 is a deficient number, since it is larger than the sum of its proper divisors (3157791).

22104481 is an equidigital number, since it uses as much as digits as its factorization.

22104481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157790.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 22104481 is about 4701.5402795254. The cubic root of 22104481 is about 280.6468082747.

The spelling of 22104481 in words is "twenty-two million, one hundred four thousand, four hundred eighty-one".