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14821 is a prime number

14821 has 2 divisors, whose sum is σ = 14822. Its totient is φ = 14820.

The previous prime is 14813. The next prime is 14827. The reversal of 14821 is 12841.

It can be divided in two parts, 148 and 21, that added together give a square (169 = 132).

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., 12321 + 2500 = 111^2 + 50^2 .

It is an emirp because it is prime and its reverse (12841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14821 - 23 = 14813 is a prime.

It is a super-3 number, since 3×148213 = 9766833328983, which contains 333 as substring.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 14795 and 14804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7410 + 7411.

It is an arithmetic number, because the mean of its divisors is an integer number (7411).

214821 is an apocalyptic number.

It is an amenable number.

14821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14821 is an equidigital number, since it uses as much as digits as its factorization.

14821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64, while the sum is 16.

The square root of 14821 is about 121.7415294795. The cubic root of 14821 is about 24.5636274779.

The spelling of 14821 in words is "fourteen thousand, eight hundred twenty-one".