13500505 has 4 divisors (see below), whose sum is σ = 16200612. Its totient is φ = 10800400.

The previous prime is 13500493. The next prime is 13500551. The reversal of 13500505 is 50500531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50500531 = 821 ⋅61511.

It can be written as a sum of positive squares in 2 ways, for example, as 8020224 + 5480281 = 2832^2 + 2341^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13500505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350046 + ... + 1350055.

It is an arithmetic number, because the mean of its divisors is an integer number (4050153).

Almost surely, 2^13500505 is an apocalyptic number.

It is an amenable number.

13500505 is a deficient number, since it is larger than the sum of its proper divisors (2700107).

13500505 is an equidigital number, since it uses as much as digits as its factorization.

13500505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700106.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 13500505 is about 3674.3033353277. The cubic root of 13500505 is about 238.1131267861.

The spelling of 13500505 in words is "thirteen million, five hundred thousand, five hundred five".