22451043 has 4 divisors (see below), whose sum is σ = 29934728. Its totient is φ = 14967360.

The previous prime is 22451041. The next prime is 22451047. The reversal of 22451043 is 34015422.

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

It is not a de Polignac number, because 22451043 - 2¹ = 22451041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22451041) 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, 3741838 + ... + 3741843.

It is an arithmetic number, because the mean of its divisors is an integer number (7483682).

Almost surely, 2^22451043 is an apocalyptic number.

22451043 is a deficient number, since it is larger than the sum of its proper divisors (7483685).

22451043 is an equidigital number, since it uses as much as digits as its factorization.

22451043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483684.

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

The square root of 22451043 is about 4738.2531591294. The cubic root of 22451043 is about 282.1059030839.

Adding to 22451043 its reverse (34015422), we get a palindrome (56466465).

The spelling of 22451043 in words is "twenty-two million, four hundred fifty-one thousand, forty-three".