271993 has 4 divisors (see below), whose sum is σ = 274788. Its totient is φ = 269200.

The previous prime is 271981. The next prime is 272003. The reversal of 271993 is 399172.

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 200704 + 71289 = 448^2 + 267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-271993 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (271903) 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, 1246 + ... + 1447.

It is an arithmetic number, because the mean of its divisors is an integer number (68697).

2²⁷¹⁹⁹³ is an apocalyptic number.

It is an amenable number.

271993 is a deficient number, since it is larger than the sum of its proper divisors (2795).

271993 is a wasteful number, since it uses less digits than its factorization.

271993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794.

The product of its digits is 3402, while the sum is 31.

The square root of 271993 is about 521.5294814294. The cubic root of 271993 is about 64.7916802050.

The spelling of 271993 in words is "two hundred seventy-one thousand, nine hundred ninety-three".