13578113 has 4 divisors (see below), whose sum is σ = 13592580. Its totient is φ = 13563648.

The previous prime is 13578109. The next prime is 13578127. The reversal of 13578113 is 31187531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10452289 + 3125824 = 3233^2 + 1768^2 .

It is a cyclic number.

It is not a de Polignac number, because 13578113 - 2² = 13578109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13578133) 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, 5720 + ... + 7737.

It is an arithmetic number, because the mean of its divisors is an integer number (3398145).

Almost surely, 2^13578113 is an apocalyptic number.

It is an amenable number.

13578113 is a deficient number, since it is larger than the sum of its proper divisors (14467).

13578113 is a wasteful number, since it uses less digits than its factorization.

13578113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14466.

The product of its digits is 2520, while the sum is 29.

The square root of 13578113 is about 3684.8491149571. The cubic root of 13578113 is about 238.5685217576.

The spelling of 13578113 in words is "thirteen million, five hundred seventy-eight thousand, one hundred thirteen".