549878 has 24 divisors (see below), whose sum is σ = 995904. Its totient is φ = 226800.

The previous prime is 549877. The next prime is 549883. The reversal of 549878 is 878945.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon 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 549878.

It is not an unprimeable number, because it can be changed into a prime (549877) 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 11 ways as a sum of consecutive naturals, for example, 2948 + ... + 3128.

It is an arithmetic number, because the mean of its divisors is an integer number (41496).

2⁵⁴⁹⁸⁷⁸ is an apocalyptic number.

549878 is a deficient number, since it is larger than the sum of its proper divisors (446026).

549878 is a wasteful number, since it uses less digits than its factorization.

549878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 221 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 549878 is about 741.5375917646. The cubic root of 549878 is about 81.9260686003.

The spelling of 549878 in words is "five hundred forty-nine thousand, eight hundred seventy-eight".