55039 has 4 divisors (see below), whose sum is σ = 57456. Its totient is φ = 52624.

The previous prime is 55021. The next prime is 55049. The reversal of 55039 is 93055.

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

It is not a de Polignac number, because 55039 - 2¹⁵ = 22271 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55009) 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, 1174 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (14364).

2⁵⁵⁰³⁹ is an apocalyptic number.

55039 is a deficient number, since it is larger than the sum of its proper divisors (2417).

55039 is a wasteful number, since it uses less digits than its factorization.

55039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416.

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 55039 is about 234.6039215359. The cubic root of 55039 is about 38.0385112806.

The spelling of 55039 in words is "fifty-five thousand, thirty-nine".