13520481 has 16 divisors (see below), whose sum is σ = 20259456. Its totient is φ = 7958016.

The previous prime is 13520477. The next prime is 13520483. The reversal of 13520481 is 18402531.

13520481 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13520481 - 2² = 13520477 is a prime.

It is a super-3 number, since 3×13520481³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (13520483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6640 + ... + 8433.

It is an arithmetic number, because the mean of its divisors is an integer number (1266216).

Almost surely, 2^13520481 is an apocalyptic number.

It is an amenable number.

13520481 is a deficient number, since it is larger than the sum of its proper divisors (6738975).

13520481 is a wasteful number, since it uses less digits than its factorization.

13520481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15112.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 13520481 is about 3677.0206689656. The cubic root of 13520481 is about 238.2305101418.

The spelling of 13520481 in words is "thirteen million, five hundred twenty thousand, four hundred eighty-one".