14485781 has 2 divisors, whose sum is σ = 14485782. Its totient is φ = 14485780.

The previous prime is 14485753. The next prime is 14485789. The reversal of 14485781 is 18758441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11122225 + 3363556 = 3335^2 + 1834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14485781 is a prime.

It is a super-2 number, since 2×14485781² = 419675702359922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14485789) 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 as a sum of consecutive naturals, namely, 7242890 + 7242891.

It is an arithmetic number, because the mean of its divisors is an integer number (7242891).

Almost surely, 2^14485781 is an apocalyptic number.

It is an amenable number.

14485781 is a deficient number, since it is larger than the sum of its proper divisors (1).

14485781 is an equidigital number, since it uses as much as digits as its factorization.

14485781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 38.

The square root of 14485781 is about 3806.0190488225. The cubic root of 14485781 is about 243.7702138836.

The spelling of 14485781 in words is "fourteen million, four hundred eighty-five thousand, seven hundred eighty-one".