549855 has 16 divisors (see below), whose sum is σ = 977760. Its totient is φ = 293184.

The previous prime is 549839. The next prime is 549863. The reversal of 549855 is 558945.

It is a happy number.

It is not a de Polignac number, because 549855 - 2⁴ = 549839 is a prime.

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 549855.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1902 + ... + 2171.

It is an arithmetic number, because the mean of its divisors is an integer number (61110).

2⁵⁴⁹⁸⁵⁵ is an apocalyptic number.

549855 is a deficient number, since it is larger than the sum of its proper divisors (427905).

549855 is a wasteful number, since it uses less digits than its factorization.

549855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087 (or 4081 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 549855 is about 741.5220832855. The cubic root of 549855 is about 81.9249263312.

The spelling of 549855 in words is "five hundred forty-nine thousand, eight hundred fifty-five".