84155 has 4 divisors (see below), whose sum is σ = 100992. Its totient is φ = 67320.

The previous prime is 84143. The next prime is 84163. The reversal of 84155 is 55148.

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

It is a de Polignac number, because none of the positive numbers 2^k-84155 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 84155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8411 + ... + 8420.

It is an arithmetic number, because the mean of its divisors is an integer number (25248).

2⁸⁴¹⁵⁵ is an apocalyptic number.

84155 is a deficient number, since it is larger than the sum of its proper divisors (16837).

84155 is a wasteful number, since it uses less digits than its factorization.

84155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16836.

The product of its digits is 800, while the sum is 23.

The square root of 84155 is about 290.0948120874. The cubic root of 84155 is about 43.8221123657.

The spelling of 84155 in words is "eighty-four thousand, one hundred fifty-five".