14213621 has 2 divisors, whose sum is σ = 14213622. Its totient is φ = 14213620.

The previous prime is 14213579. The next prime is 14213627. The reversal of 14213621 is 12631241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10923025 + 3290596 = 3305^2 + 1814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14213621 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 14213593 and 14213602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14213627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7106810 + 7106811.

It is an arithmetic number, because the mean of its divisors is an integer number (7106811).

Almost surely, 2^14213621 is an apocalyptic number.

It is an amenable number.

14213621 is a deficient number, since it is larger than the sum of its proper divisors (1).

14213621 is an equidigital number, since it uses as much as digits as its factorization.

14213621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 14213621 is about 3770.0956221295. The cubic root of 14213621 is about 242.2338938052.

Adding to 14213621 its reverse (12631241), we get a palindrome (26844862).

The spelling of 14213621 in words is "fourteen million, two hundred thirteen thousand, six hundred twenty-one".