4530509 has 4 divisors (see below), whose sum is σ = 4570716. Its totient is φ = 4490304.

The previous prime is 4530503. The next prime is 4530511. The reversal of 4530509 is 9050354.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9050354 = 2 ⋅4525177.

It can be written as a sum of positive squares in 2 ways, for example, as 162409 + 4368100 = 403^2 + 2090^2 .

It is a cyclic number.

It is not a de Polignac number, because 4530509 - 2¹² = 4526413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4530503) 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, 19934 + ... + 20159.

It is an arithmetic number, because the mean of its divisors is an integer number (1142679).

Almost surely, 2^4530509 is an apocalyptic number.

It is an amenable number.

4530509 is a deficient number, since it is larger than the sum of its proper divisors (40207).

4530509 is a wasteful number, since it uses less digits than its factorization.

4530509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40206.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 4530509 is about 2128.4992365514. The cubic root of 4530509 is about 165.4686279652.

The spelling of 4530509 in words is "four million, five hundred thirty thousand, five hundred nine".