13500845 has 4 divisors (see below), whose sum is σ = 16201020. Its totient is φ = 10800672.

The previous prime is 13500833. The next prime is 13500853. The reversal of 13500845 is 54800531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54800531 = 1129 ⋅48539.

It can be written as a sum of positive squares in 2 ways, for example, as 5943844 + 7557001 = 2438^2 + 2749^2 .

It is a cyclic number.

It is not a de Polignac number, because 13500845 - 2⁸ = 13500589 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 1350080 + ... + 1350089.

It is an arithmetic number, because the mean of its divisors is an integer number (4050255).

Almost surely, 2^13500845 is an apocalyptic number.

It is an amenable number.

13500845 is a deficient number, since it is larger than the sum of its proper divisors (2700175).

13500845 is an equidigital number, since it uses as much as digits as its factorization.

13500845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700174.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 13500845 is about 3674.3496023106. The cubic root of 13500845 is about 238.1151256689.

The spelling of 13500845 in words is "thirteen million, five hundred thousand, eight hundred forty-five".