549887 has 4 divisors (see below), whose sum is σ = 592200. Its totient is φ = 507576.

The previous prime is 549883. The next prime is 549911. The reversal of 549887 is 788945.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 549887 - 2² = 549883 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21137 + ... + 21162.

It is an arithmetic number, because the mean of its divisors is an integer number (148050).

2⁵⁴⁹⁸⁸⁷ is an apocalyptic number.

549887 is a deficient number, since it is larger than the sum of its proper divisors (42313).

549887 is a wasteful number, since it uses less digits than its factorization.

549887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42312.

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

The square root of 549887 is about 741.5436602116. The cubic root of 549887 is about 81.9265155664.

The spelling of 549887 in words is "five hundred forty-nine thousand, eight hundred eighty-seven".