273145 has 4 divisors (see below), whose sum is σ = 327780. Its totient is φ = 218512.

The previous prime is 273131. The next prime is 273149. The reversal of 273145 is 541372.

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

It can be written as a sum of positive squares in 2 ways, for example, as 141376 + 131769 = 376^2 + 363^2 .

It is a cyclic number.

It is not a de Polignac number, because 273145 - 2⁵ = 273113 is a prime.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (273149) 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, 27310 + ... + 27319.

It is an arithmetic number, because the mean of its divisors is an integer number (81945).

2²⁷³¹⁴⁵ is an apocalyptic number.

It is an amenable number.

273145 is a deficient number, since it is larger than the sum of its proper divisors (54635).

273145 is an equidigital number, since it uses as much as digits as its factorization.

273145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54634.

The product of its digits is 840, while the sum is 22.

The square root of 273145 is about 522.6327582538. The cubic root of 273145 is about 64.8830243279.

The spelling of 273145 in words is "two hundred seventy-three thousand, one hundred forty-five".