22441457 has 4 divisors (see below), whose sum is σ = 22711920. Its totient is φ = 22170996.

The previous prime is 22441379. The next prime is 22441459. The reversal of 22441457 is 75414422.

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 a cyclic number.

It is not a de Polignac number, because 22441457 - 2²⁰ = 21392881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22441459) 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, 135107 + ... + 135272.

It is an arithmetic number, because the mean of its divisors is an integer number (5677980).

Almost surely, 2^22441457 is an apocalyptic number.

It is an amenable number.

22441457 is a deficient number, since it is larger than the sum of its proper divisors (270463).

22441457 is an equidigital number, since it uses as much as digits as its factorization.

22441457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270462.

The product of its digits is 8960, while the sum is 29.

The square root of 22441457 is about 4737.2414969051. The cubic root of 22441457 is about 282.0657467882.

Adding to 22441457 its reverse (75414422), we get a palindrome (97855879).

The spelling of 22441457 in words is "twenty-two million, four hundred forty-one thousand, four hundred fifty-seven".