22443401 has 2 divisors, whose sum is σ = 22443402. Its totient is φ = 22443400.

The previous prime is 22443373. The next prime is 22443403. The reversal of 22443401 is 10434422.

22443401 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11560000 + 10883401 = 3400^2 + 3299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22443401 is a prime.

Together with 22443403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22443403) 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 as a sum of consecutive naturals, namely, 11221700 + 11221701.

It is an arithmetic number, because the mean of its divisors is an integer number (11221701).

Almost surely, 2^22443401 is an apocalyptic number.

It is an amenable number.

22443401 is a deficient number, since it is larger than the sum of its proper divisors (1).

22443401 is an equidigital number, since it uses as much as digits as its factorization.

22443401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22443401 is about 4737.4466751616. The cubic root of 22443401 is about 282.0738912383.

Adding to 22443401 its reverse (10434422), we get a palindrome (32877823).

The spelling of 22443401 in words is "twenty-two million, four hundred forty-three thousand, four hundred one".