13521383 has 4 divisors (see below), whose sum is σ = 13809120. Its totient is φ = 13233648.

The previous prime is 13521373. The next prime is 13521397. The reversal of 13521383 is 38312531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38312531 = 19 ⋅2016449.

It is a cyclic number.

It is not a de Polignac number, because 13521383 - 2⁴ = 13521367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143798 + ... + 143891.

It is an arithmetic number, because the mean of its divisors is an integer number (3452280).

Almost surely, 2^13521383 is an apocalyptic number.

13521383 is a deficient number, since it is larger than the sum of its proper divisors (287737).

13521383 is an equidigital number, since it uses as much as digits as its factorization.

13521383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287736.

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

The square root of 13521383 is about 3677.1433205683. The cubic root of 13521383 is about 238.2358077625.

The spelling of 13521383 in words is "thirteen million, five hundred twenty-one thousand, three hundred eighty-three".