5518219 has 4 divisors (see below), whose sum is σ = 6306544. Its totient is φ = 4729896.

The previous prime is 5518171. The next prime is 5518241. The reversal of 5518219 is 9128155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9128155 = 5 ⋅1825631.

It is a cyclic number.

It is not a de Polignac number, because 5518219 - 2¹³ = 5510027 is a prime.

It is a super-2 number, since 2×5518219² = 60901481863922, which contains 22 as substring.

It is a Duffinian number.

5518219 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5518259) 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 3 ways as a sum of consecutive naturals, for example, 394152 + ... + 394165.

It is an arithmetic number, because the mean of its divisors is an integer number (1576636).

Almost surely, 2^5518219 is an apocalyptic number.

5518219 is a deficient number, since it is larger than the sum of its proper divisors (788325).

5518219 is an equidigital number, since it uses as much as digits as its factorization.

5518219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788324.

The product of its digits is 3600, while the sum is 31.

The square root of 5518219 is about 2349.0889723465. The cubic root of 5518219 is about 176.7121092706.

The spelling of 5518219 in words is "five million, five hundred eighteen thousand, two hundred nineteen".