13481517 has 12 divisors (see below), whose sum is σ = 20910336. Its totient is φ = 7703640.

The previous prime is 13481477. The next prime is 13481569. The reversal of 13481517 is 71518431.

It is not a de Polignac number, because 13481517 - 2⁸ = 13481261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13481597) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45709 + ... + 46002.

It is an arithmetic number, because the mean of its divisors is an integer number (1742528).

Almost surely, 2^13481517 is an apocalyptic number.

It is an amenable number.

13481517 is a deficient number, since it is larger than the sum of its proper divisors (7428819).

13481517 is an equidigital number, since it uses as much as digits as its factorization.

13481517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91728 (or 91721 counting only the distinct ones).

The product of its digits is 3360, while the sum is 30.

The square root of 13481517 is about 3671.7185349642. The cubic root of 13481517 is about 238.0014417444.

Adding to 13481517 its reverse (71518431), we get a palindrome (84999948).

The spelling of 13481517 in words is "thirteen million, four hundred eighty-one thousand, five hundred seventeen".