5518044 has 72 divisors (see below), whose sum is σ = 16551808. Its totient is φ = 1574640.

The previous prime is 5518043. The next prime is 5518099. The reversal of 5518044 is 4408155.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 5517999 and 5518017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6399 + ... + 7209.

Almost surely, 2^5518044 is an apocalyptic number.

5518044 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5518044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8275904).

5518044 is an abundant number, since it is smaller than the sum of its proper divisors (11033764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5518044 is a wasteful number, since it uses less digits than its factorization.

5518044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 5518044 is about 2349.0517235685. The cubic root of 5518044 is about 176.7102412194.

The spelling of 5518044 in words is "five million, five hundred eighteen thousand, forty-four".