14355721 has 4 divisors (see below), whose sum is σ = 14450944. Its totient is φ = 14260500.

The previous prime is 14355689. The next prime is 14355743. The reversal of 14355721 is 12755341.

It is a happy number.

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 14355721 - 2⁵ = 14355689 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 14355721.

It is not an unprimeable number, because it can be changed into a prime (14355791) 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, 47385 + ... + 47686.

It is an arithmetic number, because the mean of its divisors is an integer number (3612736).

Almost surely, 2^14355721 is an apocalyptic number.

It is an amenable number.

14355721 is a deficient number, since it is larger than the sum of its proper divisors (95223).

14355721 is an equidigital number, since it uses as much as digits as its factorization.

14355721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95222.

The product of its digits is 4200, while the sum is 28.

The square root of 14355721 is about 3788.8944297776. The cubic root of 14355721 is about 243.0384591423.

The spelling of 14355721 in words is "fourteen million, three hundred fifty-five thousand, seven hundred twenty-one".