55839 has 8 divisors (see below), whose sum is σ = 85120. Its totient is φ = 31896.

The previous prime is 55837. The next prime is 55843. The reversal of 55839 is 93855.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55839 - 2¹ = 55837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309 + ... + 1350.

It is an arithmetic number, because the mean of its divisors is an integer number (10640).

2⁵⁵⁸³⁹ is an apocalyptic number.

55839 is a deficient number, since it is larger than the sum of its proper divisors (29281).

55839 is a wasteful number, since it uses less digits than its factorization.

55839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669.

The product of its digits is 5400, while the sum is 30.

The square root of 55839 is about 236.3027718839. The cubic root of 55839 is about 38.2219239481.

The spelling of 55839 in words is "fifty-five thousand, eight hundred thirty-nine".