271256261 has 4 divisors (see below), whose sum is σ = 271584300. Its totient is φ = 270928224.

The previous prime is 271256257. The next prime is 271256299. The reversal of 271256261 is 162652172.

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 236975236 + 34281025 = 15394^2 + 5855^2 .

It is a cyclic number.

It is not a de Polignac number, because 271256261 - 2² = 271256257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271256221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162776 + ... + 164433.

It is an arithmetic number, because the mean of its divisors is an integer number (67896075).

Almost surely, 2^271256261 is an apocalyptic number.

It is an amenable number.

271256261 is a deficient number, since it is larger than the sum of its proper divisors (328039).

271256261 is an equidigital number, since it uses as much as digits as its factorization.

271256261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328038.

The product of its digits is 10080, while the sum is 32.

The square root of 271256261 is about 16469.8591675825. The cubic root of 271256261 is about 647.3312756863.

The spelling of 271256261 in words is "two hundred seventy-one million, two hundred fifty-six thousand, two hundred sixty-one".