5555809 has 16 divisors (see below), whose sum is σ = 6870400. Its totient is φ = 4385664.

The previous prime is 5555807. The next prime is 5555813. The reversal of 5555809 is 9085555.

It is a cyclic number.

It is not a de Polignac number, because 5555809 - 2¹ = 5555807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (5555807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4357 + ... + 5485.

It is an arithmetic number, because the mean of its divisors is an integer number (429400).

Almost surely, 2^5555809 is an apocalyptic number.

It is an amenable number.

5555809 is a deficient number, since it is larger than the sum of its proper divisors (1314591).

5555809 is a wasteful number, since it uses less digits than its factorization.

5555809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192.

The product of its (nonzero) digits is 45000, while the sum is 37.

The square root of 5555809 is about 2357.0763670276. The cubic root of 5555809 is about 177.1124547386.

The spelling of 5555809 in words is "five million, five hundred fifty-five thousand, eight hundred nine".