14255821 has 2 divisors, whose sum is σ = 14255822. Its totient is φ = 14255820.

The previous prime is 14255819. The next prime is 14255861. The reversal of 14255821 is 12855241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9030025 + 5225796 = 3005^2 + 2286^2 .

It is a cyclic number.

It is not a de Polignac number, because 14255821 - 2¹ = 14255819 is a prime.

Together with 14255819, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 14255821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14255861) 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 as a sum of consecutive naturals, namely, 7127910 + 7127911.

It is an arithmetic number, because the mean of its divisors is an integer number (7127911).

Almost surely, 2^14255821 is an apocalyptic number.

It is an amenable number.

14255821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14255821 is an equidigital number, since it uses as much as digits as its factorization.

14255821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3200, while the sum is 28.

The square root of 14255821 is about 3775.6881491988. The cubic root of 14255821 is about 242.4733863875.

The spelling of 14255821 in words is "fourteen million, two hundred fifty-five thousand, eight hundred twenty-one".