5505509 has 4 divisors (see below), whose sum is σ = 5510304. Its totient is φ = 5500716.

The previous prime is 5505449. The next prime is 5505527. The reversal of 5505509 is 9055055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5505509 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 (5505109) 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, 464 + ... + 3350.

It is an arithmetic number, because the mean of its divisors is an integer number (1377576).

Almost surely, 2^5505509 is an apocalyptic number.

It is an amenable number.

5505509 is a deficient number, since it is larger than the sum of its proper divisors (4795).

5505509 is a wasteful number, since it uses less digits than its factorization.

5505509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4794.

The product of its (nonzero) digits is 5625, while the sum is 29.

The square root of 5505509 is about 2346.3821086941. The cubic root of 5505509 is about 176.5763325211.

The spelling of 5505509 in words is "five million, five hundred five thousand, five hundred nine".