55385 has 16 divisors (see below), whose sum is σ = 77760. Its totient is φ = 37440.

The previous prime is 55381. The next prime is 55399. The reversal of 55385 is 58355.

55385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55385 - 2² = 55381 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1019 + ... + 1071.

It is an arithmetic number, because the mean of its divisors is an integer number (4860).

2⁵⁵³⁸⁵ is an apocalyptic number.

55385 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55385 is a deficient number, since it is larger than the sum of its proper divisors (22375).

55385 is a wasteful number, since it uses less digits than its factorization.

55385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88.

The product of its digits is 3000, while the sum is 26.

The square root of 55385 is about 235.3401793150. The cubic root of 55385 is about 38.1180539169.

Adding to 55385 its product of digits (3000), we get a palindrome (58385).

The spelling of 55385 in words is "fifty-five thousand, three hundred eighty-five".