104530509 has 18 divisors (see below), whose sum is σ = 153006126. Its totient is φ = 68767920.

The previous prime is 104530499. The next prime is 104530523. The reversal of 104530509 is 905035401.

104530509 is a `hidden beast` number, since 104 + 53 + 0 + 509 = 666.

It can be written as a sum of positive squares in only one way, i.e., 53978409 + 50552100 = 7347^2 + 7110^2 .

It is not a de Polignac number, because 104530509 - 2⁴ = 104530493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104530409) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 55239 + ... + 57099.

Almost surely, 2^104530509 is an apocalyptic number.

It is an amenable number.

104530509 is a deficient number, since it is larger than the sum of its proper divisors (48475617).

104530509 is an equidigital number, since it uses as much as digits as its factorization.

104530509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 104530509 is about 10224.0162851983. The cubic root of 104530509 is about 471.0651998399.

The spelling of 104530509 in words is "one hundred four million, five hundred thirty thousand, five hundred nine".