13221583 has 2 divisors, whose sum is σ = 13221584. Its totient is φ = 13221582.

The previous prime is 13221581. The next prime is 13221599. The reversal of 13221583 is 38512231.

It is a weak prime.

It is an emirp because it is prime and its reverse (38512231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13221583 - 2¹ = 13221581 is a prime.

Together with 13221581, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13221581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610791 + 6610792.

It is an arithmetic number, because the mean of its divisors is an integer number (6610792).

Almost surely, 2^13221583 is an apocalyptic number.

13221583 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221583 is an equidigital number, since it uses as much as digits as its factorization.

13221583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 13221583 is about 3636.1494743753. The cubic root of 13221583 is about 236.4618874887.

The spelling of 13221583 in words is "thirteen million, two hundred twenty-one thousand, five hundred eighty-three".