275640271 has 4 divisors (see below), whose sum is σ = 280312200. Its totient is φ = 270968344.

The previous prime is 275640259. The next prime is 275640283. The reversal of 275640271 is 172046572.

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

It is an interprime number because it is at equal distance from previous prime (275640259) and next prime (275640283).

It is a cyclic number.

It is not a de Polignac number, because 275640271 - 2⁷ = 275640143 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 (275640221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2335876 + ... + 2335993.

It is an arithmetic number, because the mean of its divisors is an integer number (70078050).

Almost surely, 2^275640271 is an apocalyptic number.

275640271 is a deficient number, since it is larger than the sum of its proper divisors (4671929).

275640271 is an equidigital number, since it uses as much as digits as its factorization.

275640271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4671928.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 275640271 is about 16602.4176251533. The cubic root of 275640271 is about 650.8000176984.

The spelling of 275640271 in words is "two hundred seventy-five million, six hundred forty thousand, two hundred seventy-one".