13136545 has 8 divisors (see below), whose sum is σ = 15846696. Its totient is φ = 10454016.

The previous prime is 13136537. The next prime is 13136561. The reversal of 13136545 is 54563131.

It can be written as a sum of positive squares in 4 ways, for example, as 519841 + 12616704 = 721^2 + 3552^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13136545 - 2³ = 13136537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5842 + ... + 7771.

It is an arithmetic number, because the mean of its divisors is an integer number (1980837).

Almost surely, 2^13136545 is an apocalyptic number.

It is an amenable number.

13136545 is a deficient number, since it is larger than the sum of its proper divisors (2710151).

13136545 is a wasteful number, since it uses less digits than its factorization.

13136545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13811.

The product of its digits is 5400, while the sum is 28.

The square root of 13136545 is about 3624.4371976901. The cubic root of 13136545 is about 235.9538416382.

Adding to 13136545 its reverse (54563131), we get a palindrome (67699676).

The spelling of 13136545 in words is "thirteen million, one hundred thirty-six thousand, five hundred forty-five".