5518249 has 4 divisors (see below), whose sum is σ = 6019920. Its totient is φ = 5016580.

The previous prime is 5518241. The next prime is 5518259. The reversal of 5518249 is 9428155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5518249 - 2³ = 5518241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5518241) 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, 250819 + ... + 250840.

It is an arithmetic number, because the mean of its divisors is an integer number (1504980).

Almost surely, 2^5518249 is an apocalyptic number.

It is an amenable number.

5518249 is a deficient number, since it is larger than the sum of its proper divisors (501671).

5518249 is a wasteful number, since it uses less digits than its factorization.

5518249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501670.

The product of its digits is 14400, while the sum is 34.

The square root of 5518249 is about 2349.0953577920. The cubic root of 5518249 is about 176.7124295039.

The spelling of 5518249 in words is "five million, five hundred eighteen thousand, two hundred forty-nine".