13383521 has 2 divisors, whose sum is σ = 13383522. Its totient is φ = 13383520.

The previous prime is 13383499. The next prime is 13383523. The reversal of 13383521 is 12538331.

13383521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9541921 + 3841600 = 3089^2 + 1960^2 .

It is a cyclic number.

It is not a de Polignac number, because 13383521 - 2¹⁰ = 13382497 is a prime.

Together with 13383523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13383523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6691760 + 6691761.

It is an arithmetic number, because the mean of its divisors is an integer number (6691761).

Almost surely, 2^13383521 is an apocalyptic number.

It is an amenable number.

13383521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13383521 is an equidigital number, since it uses as much as digits as its factorization.

13383521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 13383521 is about 3658.3494912324. The cubic root of 13383521 is about 237.4233680743.

The spelling of 13383521 in words is "thirteen million, three hundred eighty-three thousand, five hundred twenty-one".