5518699 has 4 divisors (see below), whose sum is σ = 5524864. Its totient is φ = 5512536.

The previous prime is 5518687. The next prime is 5518817. The reversal of 5518699 is 9968155.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9968155 = 5 ⋅1993631.

It is a cyclic number.

It is not a de Polignac number, because 5518699 - 2¹³ = 5510507 is a prime.

It is a Duffinian number.

5518699 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5518099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1452 + ... + 3625.

It is an arithmetic number, because the mean of its divisors is an integer number (1381216).

Almost surely, 2^5518699 is an apocalyptic number.

5518699 is a deficient number, since it is larger than the sum of its proper divisors (6165).

5518699 is a wasteful number, since it uses less digits than its factorization.

5518699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164.

The product of its digits is 97200, while the sum is 43.

The square root of 5518699 is about 2349.1911373918. The cubic root of 5518699 is about 176.7172328653.

The spelling of 5518699 in words is "five million, five hundred eighteen thousand, six hundred ninety-nine".