4535809 has 4 divisors (see below), whose sum is σ = 4580820. Its totient is φ = 4490800.

The previous prime is 4535717. The next prime is 4535819. The reversal of 4535809 is 9085354.

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 2772225 + 1763584 = 1665^2 + 1328^2 .

It is a cyclic number.

It is not a de Polignac number, because 4535809 - 2¹⁵ = 4503041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4535819) 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, 22354 + ... + 22555.

It is an arithmetic number, because the mean of its divisors is an integer number (1145205).

Almost surely, 2^4535809 is an apocalyptic number.

It is an amenable number.

4535809 is a deficient number, since it is larger than the sum of its proper divisors (45011).

4535809 is a wasteful number, since it uses less digits than its factorization.

4535809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45010.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 4535809 is about 2129.7438813153. The cubic root of 4535809 is about 165.5331271176.

The spelling of 4535809 in words is "four million, five hundred thirty-five thousand, eight hundred nine".