14221531 has 4 divisors (see below), whose sum is σ = 14312272. Its totient is φ = 14130792.

The previous prime is 14221523. The next prime is 14221561. The reversal of 14221531 is 13512241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13512241 = 1567 ⋅8623.

It is a cyclic number.

It is not a de Polignac number, because 14221531 - 2³ = 14221523 is a prime.

It is a super-2 number, since 2×14221531² = 404503887967922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14221499 and 14221508.

It is not an unprimeable number, because it can be changed into a prime (14221511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45135 + ... + 45448.

It is an arithmetic number, because the mean of its divisors is an integer number (3578068).

Almost surely, 2^14221531 is an apocalyptic number.

14221531 is a deficient number, since it is larger than the sum of its proper divisors (90741).

14221531 is an equidigital number, since it uses as much as digits as its factorization.

14221531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90740.

The product of its digits is 240, while the sum is 19.

The square root of 14221531 is about 3771.1445212296. The cubic root of 14221531 is about 242.2788205407.

Adding to 14221531 its reverse (13512241), we get a palindrome (27733772).

The spelling of 14221531 in words is "fourteen million, two hundred twenty-one thousand, five hundred thirty-one".