22450561 has 8 divisors (see below), whose sum is σ = 26041280. Its totient is φ = 18955728.

The previous prime is 22450499. The next prime is 22450567. The reversal of 22450561 is 16505422.

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 22450561 - 2⁷ = 22450433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22450567) 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, 23466 + ... + 24403.

It is an arithmetic number, because the mean of its divisors is an integer number (3255160).

Almost surely, 2^22450561 is an apocalyptic number.

It is an amenable number.

22450561 is a deficient number, since it is larger than the sum of its proper divisors (3590719).

22450561 is an equidigital number, since it uses as much as digits as its factorization.

22450561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47943.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 22450561 is about 4738.2022962301. The cubic root of 22450561 is about 282.1038842316.

Adding to 22450561 its reverse (16505422), we get a palindrome (38955983).

The spelling of 22450561 in words is "twenty-two million, four hundred fifty thousand, five hundred sixty-one".