13500805 has 16 divisors (see below), whose sum is σ = 17748720. Its totient is φ = 9812992.

The previous prime is 13500769. The next prime is 13500827. The reversal of 13500805 is 50800531.

It can be written as a sum of positive squares in 8 ways, for example, as 2748964 + 10751841 = 1658^2 + 3279^2 .

It is a cyclic number.

It is not a de Polignac number, because 13500805 - 2¹³ = 13492613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274 + ... + 5203.

It is an arithmetic number, because the mean of its divisors is an integer number (1109295).

Almost surely, 2^13500805 is an apocalyptic number.

It is an amenable number.

13500805 is a deficient number, since it is larger than the sum of its proper divisors (4247915).

13500805 is a wasteful number, since it uses less digits than its factorization.

13500805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 13500805 is about 3674.3441591664. The cubic root of 13500805 is about 238.1148905080.

The spelling of 13500805 in words is "thirteen million, five hundred thousand, eight hundred five".