36000509 has 4 divisors (see below), whose sum is σ = 38118204. Its totient is φ = 33882816.

The previous prime is 36000491. The next prime is 36000521. The reversal of 36000509 is 90500063.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26234884 + 9765625 = 5122^2 + 3125^2 .

It is a cyclic number.

It is not a de Polignac number, because 36000509 - 2²⁴ = 19223293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36000599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058822 + ... + 1058855.

It is an arithmetic number, because the mean of its divisors is an integer number (9529551).

Almost surely, 2^36000509 is an apocalyptic number.

It is an amenable number.

36000509 is a deficient number, since it is larger than the sum of its proper divisors (2117695).

36000509 is a wasteful number, since it uses less digits than its factorization.

36000509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117694.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 36000509 is about 6000.0424165167. The cubic root of 36000509 is about 330.1942810682.

The spelling of 36000509 in words is "thirty-six million, five hundred nine", and thus it is an aban number.