5518811 has 4 divisors (see below), whose sum is σ = 5556000. Its totient is φ = 5481624.

The previous prime is 5518687. The next prime is 5518817. The reversal of 5518811 is 1188155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1188155 = 5 ⋅237631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5518811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5518817) 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, 18371 + ... + 18668.

It is an arithmetic number, because the mean of its divisors is an integer number (1389000).

Almost surely, 2^5518811 is an apocalyptic number.

5518811 is a deficient number, since it is larger than the sum of its proper divisors (37189).

5518811 is a wasteful number, since it uses less digits than its factorization.

5518811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37188.

The product of its digits is 1600, while the sum is 29.

The square root of 5518811 is about 2349.2149752630. The cubic root of 5518811 is about 176.7184283280.

The spelling of 5518811 in words is "five million, five hundred eighteen thousand, eight hundred eleven".