13520161 has 8 divisors (see below), whose sum is σ = 13864320. Its totient is φ = 13178448.

The previous prime is 13520149. The next prime is 13520167. The reversal of 13520161 is 16102531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13520161 - 2¹³ = 13511969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13520167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15895 + ... + 16723.

It is an arithmetic number, because the mean of its divisors is an integer number (1733040).

Almost surely, 2^13520161 is an apocalyptic number.

It is an amenable number.

13520161 is a deficient number, since it is larger than the sum of its proper divisors (344159).

13520161 is an equidigital number, since it uses as much as digits as its factorization.

13520161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 13520161 is about 3676.9771552187. The cubic root of 13520161 is about 238.2286306632.

Adding to 13520161 its reverse (16102531), we get a palindrome (29622692).

The spelling of 13520161 in words is "thirteen million, five hundred twenty thousand, one hundred sixty-one".