270091 has 4 divisors (see below), whose sum is σ = 271912. Its totient is φ = 268272.

The previous prime is 270073. The next prime is 270097. The reversal of 270091 is 190072.

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

It is a cyclic number.

It is not a de Polignac number, because 270091 - 2⁵ = 270059 is a prime.

It is a Duffinian number.

270091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (270097) 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, 666 + ... + 991.

It is an arithmetic number, because the mean of its divisors is an integer number (67978).

2²⁷⁰⁰⁹¹ is an apocalyptic number.

270091 is a deficient number, since it is larger than the sum of its proper divisors (1821).

270091 is a wasteful number, since it uses less digits than its factorization.

270091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 270091 is about 519.7027996846. The cubic root of 270091 is about 64.6403011282.

Subtracting from 270091 its sum of digits (19), we obtain a palindrome (270072).

The spelling of 270091 in words is "two hundred seventy thousand, ninety-one".