22004461 has 2 divisors, whose sum is σ = 22004462. Its totient is φ = 22004460.

The previous prime is 22004459. The next prime is 22004471. The reversal of 22004461 is 16440022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12823561 + 9180900 = 3581^2 + 3030^2 .

It is a cyclic number.

It is not a de Polignac number, because 22004461 - 2¹ = 22004459 is a prime.

Together with 22004459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22004431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11002230 + 11002231.

It is an arithmetic number, because the mean of its divisors is an integer number (11002231).

Almost surely, 2^22004461 is an apocalyptic number.

It is an amenable number.

22004461 is a deficient number, since it is larger than the sum of its proper divisors (1).

22004461 is an equidigital number, since it uses as much as digits as its factorization.

22004461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 22004461 is about 4690.8912799169. The cubic root of 22004461 is about 280.2228710241. Note that the first 3 decimals are identical.

Adding to 22004461 its reverse (16440022), we get a palindrome (38444483).

The spelling of 22004461 in words is "twenty-two million, four thousand, four hundred sixty-one".