14591221 has 8 divisors (see below), whose sum is σ = 15555200. Its totient is φ = 13646880.

The previous prime is 14591207. The next prime is 14591243. The reversal of 14591221 is 12219541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 14591221 - 2²³ = 6202613 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 (14591201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3360 + ... + 6361.

It is an arithmetic number, because the mean of its divisors is an integer number (1944400).

Almost surely, 2^14591221 is an apocalyptic number.

It is an amenable number.

14591221 is a deficient number, since it is larger than the sum of its proper divisors (963979).

14591221 is an equidigital number, since it uses as much as digits as its factorization.

14591221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9819.

The product of its digits is 720, while the sum is 25.

The square root of 14591221 is about 3819.8456775111. The cubic root of 14591221 is about 244.3602411924.

The spelling of 14591221 in words is "fourteen million, five hundred ninety-one thousand, two hundred twenty-one".