13224451 has 4 divisors (see below), whose sum is σ = 13348152. Its totient is φ = 13100752.

The previous prime is 13224391. The next prime is 13224457. The reversal of 13224451 is 15442231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13224451 - 2²³ = 4835843 is a prime.

It is a super-2 number, since 2×13224451² = 349772208502802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13224457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61690 + ... + 61903.

It is an arithmetic number, because the mean of its divisors is an integer number (3337038).

Almost surely, 2^13224451 is an apocalyptic number.

13224451 is a deficient number, since it is larger than the sum of its proper divisors (123701).

13224451 is a wasteful number, since it uses less digits than its factorization.

13224451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123700.

The product of its digits is 960, while the sum is 22.

The square root of 13224451 is about 3636.5438262174. The cubic root of 13224451 is about 236.4789838697.

Adding to 13224451 its reverse (15442231), we get a palindrome (28666682).

The spelling of 13224451 in words is "thirteen million, two hundred twenty-four thousand, four hundred fifty-one".