14454721 has 4 divisors (see below), whose sum is σ = 14462932. Its totient is φ = 14446512.

The previous prime is 14454719. The next prime is 14454761. The reversal of 14454721 is 12745441.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12745441 = 877 ⋅14533.

It can be written as a sum of positive squares in 2 ways, for example, as 8880400 + 5574321 = 2980^2 + 2361^2 .

It is a cyclic number.

It is not a de Polignac number, because 14454721 - 2¹ = 14454719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14454721.

It is not an unprimeable number, because it can be changed into a prime (14454761) 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, 270 + ... + 5383.

It is an arithmetic number, because the mean of its divisors is an integer number (3615733).

Almost surely, 2^14454721 is an apocalyptic number.

It is an amenable number.

14454721 is a deficient number, since it is larger than the sum of its proper divisors (8211).

14454721 is an equidigital number, since it uses as much as digits as its factorization.

14454721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8210.

The product of its digits is 4480, while the sum is 28.

The square root of 14454721 is about 3801.9364802690. The cubic root of 14454721 is about 243.5958608213.

The spelling of 14454721 in words is "fourteen million, four hundred fifty-four thousand, seven hundred twenty-one".