22004553 has 4 divisors (see below), whose sum is σ = 29339408. Its totient is φ = 14669700.

The previous prime is 22004539. The next prime is 22004561. The reversal of 22004553 is 35540022.

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.

It is not a de Polignac number, because 22004553 - 2⁹ = 22004041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22004053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3667423 + ... + 3667428.

It is an arithmetic number, because the mean of its divisors is an integer number (7334852).

Almost surely, 2^22004553 is an apocalyptic number.

It is an amenable number.

22004553 is a deficient number, since it is larger than the sum of its proper divisors (7334855).

22004553 is an equidigital number, since it uses as much as digits as its factorization.

22004553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7334854.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 22004553 is about 4690.9010861454. The cubic root of 22004553 is about 280.2232615581.

Adding to 22004553 its reverse (35540022), we get a palindrome (57544575).

The spelling of 22004553 in words is "twenty-two million, four thousand, five hundred fifty-three".