275638271 has 4 divisors (see below), whose sum is σ = 283087992. Its totient is φ = 268188552.

The previous prime is 275638247. The next prime is 275638303. The reversal of 275638271 is 172836572.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-275638271 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 (275638211) 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, 3724805 + ... + 3724878.

It is an arithmetic number, because the mean of its divisors is an integer number (70771998).

Almost surely, 2^275638271 is an apocalyptic number.

275638271 is a deficient number, since it is larger than the sum of its proper divisors (7449721).

275638271 is an equidigital number, since it uses as much as digits as its factorization.

275638271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449720.

The product of its digits is 141120, while the sum is 41.

The square root of 275638271 is about 16602.3573928524. The cubic root of 275638271 is about 650.7984436624.

The spelling of 275638271 in words is "two hundred seventy-five million, six hundred thirty-eight thousand, two hundred seventy-one".