549885 has 16 divisors (see below), whose sum is σ = 1005696. Its totient is φ = 251328.

The previous prime is 549883. The next prime is 549911. The reversal of 549885 is 588945.

It is not a de Polignac number, because 549885 - 2¹ = 549883 is a prime.

It is a Curzon number.

549885 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549885.

It is not an unprimeable number, because it can be changed into a prime (549883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2514 + ... + 2723.

It is an arithmetic number, because the mean of its divisors is an integer number (62856).

2⁵⁴⁹⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

549885 is a deficient number, since it is larger than the sum of its proper divisors (455811).

549885 is a wasteful number, since it uses less digits than its factorization.

549885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5252.

The product of its digits is 57600, while the sum is 39.

The square root of 549885 is about 741.5423116721. The cubic root of 549885 is about 81.9264162410.

Subtracting 549885 from its reverse (588945), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 549885 in words is "five hundred forty-nine thousand, eight hundred eighty-five".