22051443 has 4 divisors (see below), whose sum is σ = 29401928. Its totient is φ = 14700960.

The previous prime is 22051433. The next prime is 22051459. The reversal of 22051443 is 34415022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22051443 - 2¹⁰ = 22050419 is a prime.

It is a super-2 number, since 2×22051443² = 972532276764498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22051423) 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, 3675238 + ... + 3675243.

It is an arithmetic number, because the mean of its divisors is an integer number (7350482).

Almost surely, 2^22051443 is an apocalyptic number.

22051443 is a deficient number, since it is larger than the sum of its proper divisors (7350485).

22051443 is an equidigital number, since it uses as much as digits as its factorization.

22051443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7350484.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22051443 is about 4695.8964000497. The cubic root of 22051443 is about 280.4221650390.

Adding to 22051443 its reverse (34415022), we get a palindrome (56466465).

The spelling of 22051443 in words is "twenty-two million, fifty-one thousand, four hundred forty-three".