72855 has 12 divisors (see below), whose sum is σ = 126360. Its totient is φ = 38832.

The previous prime is 72823. The next prime is 72859. The reversal of 72855 is 55827.

It is a happy number.

It is not a de Polignac number, because 72855 - 2⁵ = 72823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72859) 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, 765 + ... + 854.

It is an arithmetic number, because the mean of its divisors is an integer number (10530).

2⁷²⁸⁵⁵ is an apocalyptic number.

72855 is a deficient number, since it is larger than the sum of its proper divisors (53505).

72855 is a wasteful number, since it uses less digits than its factorization.

72855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630 (or 1627 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 72855 is about 269.9166538026. The cubic root of 72855 is about 41.7657021984.

The spelling of 72855 in words is "seventy-two thousand, eight hundred fifty-five".