549243 has 6 divisors (see below), whose sum is σ = 793364. Its totient is φ = 366156.

The previous prime is 549229. The next prime is 549247. The reversal of 549243 is 342945.

549243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 549243 - 2¹⁸ = 287099 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549243.

It is not an unprimeable number, because it can be changed into a prime (549247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30505 + ... + 30522.

2⁵⁴⁹²⁴³ is an apocalyptic number.

549243 is a deficient number, since it is larger than the sum of its proper divisors (244121).

549243 is a wasteful number, since it uses less digits than its factorization.

549243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61033 (or 61030 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 549243 is about 741.1093036793. The cubic root of 549243 is about 81.8945203345.

The spelling of 549243 in words is "five hundred forty-nine thousand, two hundred forty-three".