271961 has 4 divisors (see below), whose sum is σ = 273024. Its totient is φ = 270900.

The previous prime is 271939. The next prime is 271967. The reversal of 271961 is 169172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 271961 - 2⁶ = 271897 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 271961.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 271961.

It is not an unprimeable number, because it can be changed into a prime (271967) 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, 116 + ... + 746.

It is an arithmetic number, because the mean of its divisors is an integer number (68256).

2²⁷¹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

271961 is a deficient number, since it is larger than the sum of its proper divisors (1063).

271961 is an equidigital number, since it uses as much as digits as its factorization.

271961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062.

The product of its digits is 756, while the sum is 26.

The square root of 271961 is about 521.4988015327. The cubic root of 271961 is about 64.7891391898.

The spelling of 271961 in words is "two hundred seventy-one thousand, nine hundred sixty-one".