5509609 has 8 divisors (see below), whose sum is σ = 6425600. Its totient is φ = 4722228.

The previous prime is 5509589. The next prime is 5509619. The reversal of 5509609 is 9069055.

5509609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5509609 - 2⁵ = 5509577 is a prime.

It is a Duffinian number.

5509609 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5509619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7689 + ... + 8374.

It is an arithmetic number, because the mean of its divisors is an integer number (803200).

Almost surely, 2^5509609 is an apocalyptic number.

It is an amenable number.

5509609 is a deficient number, since it is larger than the sum of its proper divisors (915991).

5509609 is an equidigital number, since it uses as much as digits as its factorization.

5509609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16084 (or 16070 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 5509609 is about 2347.2556315834. The cubic root of 5509609 is about 176.6201542836.

The spelling of 5509609 in words is "five million, five hundred nine thousand, six hundred nine".