5518493 has 4 divisors (see below), whose sum is σ = 5808960. Its totient is φ = 5228028.

The previous prime is 5518463. The next prime is 5518501. The reversal of 5518493 is 3948155.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3948155 = 5 ⋅789631.

It is a cyclic number.

It is not a de Polignac number, because 5518493 - 2¹⁴ = 5502109 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518423) 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, 145205 + ... + 145242.

It is an arithmetic number, because the mean of its divisors is an integer number (1452240).

Almost surely, 2^5518493 is an apocalyptic number.

It is an amenable number.

5518493 is a deficient number, since it is larger than the sum of its proper divisors (290467).

5518493 is a wasteful number, since it uses less digits than its factorization.

5518493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290466.

The product of its digits is 21600, while the sum is 35.

The square root of 5518493 is about 2349.1472921041. The cubic root of 5518493 is about 176.7150340256.

The spelling of 5518493 in words is "five million, five hundred eighteen thousand, four hundred ninety-three".