14445221 has 4 divisors (see below), whose sum is σ = 16508832. Its totient is φ = 12381612.

The previous prime is 14445191. The next prime is 14445247. The reversal of 14445221 is 12254441.

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 14445221 - 2⁶ = 14445157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14445251) 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, 1031795 + ... + 1031808.

It is an arithmetic number, because the mean of its divisors is an integer number (4127208).

Almost surely, 2^14445221 is an apocalyptic number.

It is an amenable number.

14445221 is a deficient number, since it is larger than the sum of its proper divisors (2063611).

14445221 is an equidigital number, since it uses as much as digits as its factorization.

14445221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063610.

The product of its digits is 1280, while the sum is 23.

The square root of 14445221 is about 3800.6869115990. The cubic root of 14445221 is about 243.5424833852.

Adding to 14445221 its reverse (12254441), we get a palindrome (26699662).

The spelling of 14445221 in words is "fourteen million, four hundred forty-five thousand, two hundred twenty-one".