73855 has 4 divisors (see below), whose sum is σ = 88632. Its totient is φ = 59080.

The previous prime is 73849. The next prime is 73859. The reversal of 73855 is 55837.

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

It is not a de Polignac number, because 73855 - 2³ = 73847 is a prime.

It is a super-2 number, since 2×73855² = 10909122050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7381 + ... + 7390.

It is an arithmetic number, because the mean of its divisors is an integer number (22158).

2⁷³⁸⁵⁵ is an apocalyptic number.

73855 is a deficient number, since it is larger than the sum of its proper divisors (14777).

73855 is a wasteful number, since it uses less digits than its factorization.

73855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14776.

The product of its digits is 4200, while the sum is 28.

The square root of 73855 is about 271.7627641897. The cubic root of 73855 is about 41.9559250412.

The spelling of 73855 in words is "seventy-three thousand, eight hundred fifty-five".