14421581 has 2 divisors, whose sum is σ = 14421582. Its totient is φ = 14421580.

The previous prime is 14421577. The next prime is 14421611. The reversal of 14421581 is 18512441.

14421581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8497225 + 5924356 = 2915^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 14421581 - 2² = 14421577 is a prime.

It is a super-2 number, since 2×14421581² = 415963997079122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14421581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14421521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7210790 + 7210791.

It is an arithmetic number, because the mean of its divisors is an integer number (7210791).

Almost surely, 2^14421581 is an apocalyptic number.

It is an amenable number.

14421581 is a deficient number, since it is larger than the sum of its proper divisors (1).

14421581 is an equidigital number, since it uses as much as digits as its factorization.

14421581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 26.

The square root of 14421581 is about 3797.5756740321. The cubic root of 14421581 is about 243.4095561966.

The spelling of 14421581 in words is "fourteen million, four hundred twenty-one thousand, five hundred eighty-one".