5558909 has 4 divisors (see below), whose sum is σ = 5564160. Its totient is φ = 5553660.

The previous prime is 5558879. The next prime is 5558933. The reversal of 5558909 is 9098555.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9098555 = 5 ⋅1819711.

It is a cyclic number.

It is not a de Polignac number, because 5558909 - 2²⁰ = 4510333 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 (5558999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419 + ... + 3360.

It is an arithmetic number, because the mean of its divisors is an integer number (1391040).

Almost surely, 2^5558909 is an apocalyptic number.

It is an amenable number.

5558909 is a deficient number, since it is larger than the sum of its proper divisors (5251).

5558909 is a wasteful number, since it uses less digits than its factorization.

5558909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250.

The product of its (nonzero) digits is 81000, while the sum is 41.

The square root of 5558909 is about 2357.7338696299. The cubic root of 5558909 is about 177.1453900275.

The spelling of 5558909 in words is "five million, five hundred fifty-eight thousand, nine hundred nine".