14518721 has 4 divisors (see below), whose sum is σ = 16592832. Its totient is φ = 12444612.

The previous prime is 14518711. The next prime is 14518729. The reversal of 14518721 is 12781541.

14518721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 14518721 - 2⁶ = 14518657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14518729) 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, 1037045 + ... + 1037058.

It is an arithmetic number, because the mean of its divisors is an integer number (4148208).

Almost surely, 2^14518721 is an apocalyptic number.

It is an amenable number.

14518721 is a deficient number, since it is larger than the sum of its proper divisors (2074111).

14518721 is an equidigital number, since it uses as much as digits as its factorization.

14518721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074110.

The product of its digits is 2240, while the sum is 29.

The square root of 14518721 is about 3810.3439477297. The cubic root of 14518721 is about 243.9548480906.

The spelling of 14518721 in words is "fourteen million, five hundred eighteen thousand, seven hundred twenty-one".