135855 has 12 divisors (see below), whose sum is σ = 235560. Its totient is φ = 72432.

The previous prime is 135851. The next prime is 135859. The reversal of 135855 is 558531.

135855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (135851) and next prime (135859).

It is not a de Polignac number, because 135855 - 2² = 135851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1465 + ... + 1554.

It is an arithmetic number, because the mean of its divisors is an integer number (19630).

2¹³⁵⁸⁵⁵ is an apocalyptic number.

135855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135855 is a deficient number, since it is larger than the sum of its proper divisors (99705).

135855 is a wasteful number, since it uses less digits than its factorization.

135855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030 (or 3027 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 135855 is about 368.5851326356. The cubic root of 135855 is about 51.4073490479.

It can be divided in two parts, 135 and 855, that added together give a triangular number (990 = T₄₄).

The spelling of 135855 in words is "one hundred thirty-five thousand, eight hundred fifty-five".