5518518 has 16 divisors (see below), whose sum is σ = 11306736. Its totient is φ = 1794560.

The previous prime is 5518517. The next prime is 5518537. The reversal of 5518518 is 8158155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518511) 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 7 ways as a sum of consecutive naturals, for example, 10971 + ... + 11462.

It is an arithmetic number, because the mean of its divisors is an integer number (706671).

Almost surely, 2^5518518 is an apocalyptic number.

5518518 is an abundant number, since it is smaller than the sum of its proper divisors (5788218).

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

5518518 is a wasteful number, since it uses less digits than its factorization.

5518518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22479.

The product of its digits is 8000, while the sum is 33.

The square root of 5518518 is about 2349.1526131778. The cubic root of 5518518 is about 176.7153008780.

The spelling of 5518518 in words is "five million, five hundred eighteen thousand, five hundred eighteen".