13405513 has 4 divisors (see below), whose sum is σ = 14624208. Its totient is φ = 12186820.

The previous prime is 13405471. The next prime is 13405519. The reversal of 13405513 is 31550431.

It is a happy number.

13405513 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13405513 - 2⁹ = 13405001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13405519) 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 3 ways as a sum of consecutive naturals, for example, 609331 + ... + 609352.

It is an arithmetic number, because the mean of its divisors is an integer number (3656052).

Almost surely, 2^13405513 is an apocalyptic number.

It is an amenable number.

13405513 is a deficient number, since it is larger than the sum of its proper divisors (1218695).

13405513 is a wasteful number, since it uses less digits than its factorization.

13405513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218694.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 13405513 is about 3661.3539845254. The cubic root of 13405513 is about 237.5533427736.

Adding to 13405513 its reverse (31550431), we get a palindrome (44955944).

The spelling of 13405513 in words is "thirteen million, four hundred five thousand, five hundred thirteen".