273855 has 8 divisors (see below), whose sum is σ = 438192. Its totient is φ = 146048.

The previous prime is 273827. The next prime is 273857. The reversal of 273855 is 558372.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 273855 - 2⁷ = 273727 is a prime.

It is a super-2 number, since 2×273855² = 149993122050, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 273855.

It is not an unprimeable number, because it can be changed into a prime (273857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9114 + ... + 9143.

It is an arithmetic number, because the mean of its divisors is an integer number (54774).

2²⁷³⁸⁵⁵ is an apocalyptic number.

273855 is a deficient number, since it is larger than the sum of its proper divisors (164337).

273855 is a wasteful number, since it uses less digits than its factorization.

273855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18265.

The product of its digits is 8400, while the sum is 30.

The square root of 273855 is about 523.3115706728. The cubic root of 273855 is about 64.9391936275.

It can be divided in two parts, 273 and 855, that added together give a triangular number (1128 = T₄₇).

The spelling of 273855 in words is "two hundred seventy-three thousand, eight hundred fifty-five".