13116545 has 16 divisors (see below), whose sum is σ = 17027472. Its totient is φ = 9642240.

The previous prime is 13116541. The next prime is 13116563. The reversal of 13116545 is 54561131.

It can be written as a sum of positive squares in 8 ways, for example, as 1117249 + 11999296 = 1057^2 + 3464^2 .

It is not a de Polignac number, because 13116545 - 2² = 13116541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13116541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23975 + ... + 24515.

It is an arithmetic number, because the mean of its divisors is an integer number (1064217).

Almost surely, 2^13116545 is an apocalyptic number.

It is an amenable number.

13116545 is a deficient number, since it is larger than the sum of its proper divisors (3910927).

13116545 is a wasteful number, since it uses less digits than its factorization.

13116545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932.

The product of its digits is 1800, while the sum is 26.

The square root of 13116545 is about 3621.6770976994. The cubic root of 13116545 is about 235.8340365767.

Adding to 13116545 its reverse (54561131), we get a palindrome (67677676).

The spelling of 13116545 in words is "thirteen million, one hundred sixteen thousand, five hundred forty-five".