13113544 has 8 divisors (see below), whose sum is σ = 24587910. Its totient is φ = 6556768.

The previous prime is 13113521. The next prime is 13113547. The reversal of 13113544 is 44531131.

It can be written as a sum of positive squares in only one way, i.e., 7496644 + 5616900 = 2738^2 + 2370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13113547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 819589 + ... + 819604.

Almost surely, 2^13113544 is an apocalyptic number.

It is an amenable number.

13113544 is a deficient number, since it is larger than the sum of its proper divisors (11474366).

13113544 is a wasteful number, since it uses less digits than its factorization.

13113544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639199 (or 1639195 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 13113544 is about 3621.2627631808. The cubic root of 13113544 is about 235.8160493215.

Adding to 13113544 its reverse (44531131), we get a palindrome (57644675).

The spelling of 13113544 in words is "thirteen million, one hundred thirteen thousand, five hundred forty-four".