13520441 has 4 divisors (see below), whose sum is σ = 14749584. Its totient is φ = 12291300.

The previous prime is 13520431. The next prime is 13520449. The reversal of 13520441 is 14402531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13520441 - 2¹⁰ = 13519417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13520449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614555 + ... + 614576.

It is an arithmetic number, because the mean of its divisors is an integer number (3687396).

Almost surely, 2^13520441 is an apocalyptic number.

13520441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13520441 is a deficient number, since it is larger than the sum of its proper divisors (1229143).

13520441 is a wasteful number, since it uses less digits than its factorization.

13520441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229142.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 13520441 is about 3677.0152297754. The cubic root of 13520441 is about 238.2302752086.

Adding to 13520441 its reverse (14402531), we get a palindrome (27922972).

The spelling of 13520441 in words is "thirteen million, five hundred twenty thousand, four hundred forty-one".