5518555 has 16 divisors (see below), whose sum is σ = 7830720. Its totient is φ = 3652992.

The previous prime is 5518553. The next prime is 5518567. The reversal of 5518555 is 5558155.

It is a happy number.

It is not a de Polignac number, because 5518555 - 2¹ = 5518553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5518555.

It is not an unprimeable number, because it can be changed into a prime (5518553) 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, 1704 + ... + 3733.

It is an arithmetic number, because the mean of its divisors is an integer number (489420).

Almost surely, 2^5518555 is an apocalyptic number.

5518555 is a deficient number, since it is larger than the sum of its proper divisors (2312165).

5518555 is a wasteful number, since it uses less digits than its factorization.

5518555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478.

The product of its digits is 25000, while the sum is 34.

The square root of 5518555 is about 2349.1604883447. The cubic root of 5518555 is about 176.7156958181.

The spelling of 5518555 in words is "five million, five hundred eighteen thousand, five hundred fifty-five".