549955 has 16 divisors (see below), whose sum is σ = 794880. Its totient is φ = 356832.

The previous prime is 549949. The next prime is 549977. The reversal of 549955 is 559945.

It is not a de Polignac number, because 549955 - 2⁹ = 549443 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252 + ... + 1078.

It is an arithmetic number, because the mean of its divisors is an integer number (49680).

2⁵⁴⁹⁹⁵⁵ is an apocalyptic number.

549955 is a deficient number, since it is larger than the sum of its proper divisors (244925).

549955 is a wasteful number, since it uses less digits than its factorization.

549955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858.

The product of its digits is 40500, while the sum is 37.

The square root of 549955 is about 741.5895090952. The cubic root of 549955 is about 81.9298924866.

The spelling of 549955 in words is "five hundred forty-nine thousand, nine hundred fifty-five".