14645221 has 2 divisors, whose sum is σ = 14645222. Its totient is φ = 14645220.

The previous prime is 14645209. The next prime is 14645231. The reversal of 14645221 is 12254641.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11296321 + 3348900 = 3361^2 + 1830^2 .

It is a cyclic number.

It is not a de Polignac number, because 14645221 - 2⁹ = 14644709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14645231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7322610 + 7322611.

It is an arithmetic number, because the mean of its divisors is an integer number (7322611).

Almost surely, 2^14645221 is an apocalyptic number.

It is an amenable number.

14645221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14645221 is an equidigital number, since it uses as much as digits as its factorization.

14645221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 14645221 is about 3826.9074982288. The cubic root of 14645221 is about 244.6613173956.

Adding to 14645221 its reverse (12254641), we get a palindrome (26899862).

The spelling of 14645221 in words is "fourteen million, six hundred forty-five thousand, two hundred twenty-one".