275221171 has 2 divisors, whose sum is σ = 275221172. Its totient is φ = 275221170.

The previous prime is 275221159. The next prime is 275221181. The reversal of 275221171 is 171122572.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-275221171 is a prime.

It is a super-2 number, since 2×275221171² = 151493385933222482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (275221181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137610585 + 137610586.

It is an arithmetic number, because the mean of its divisors is an integer number (137610586).

Almost surely, 2^275221171 is an apocalyptic number.

275221171 is a deficient number, since it is larger than the sum of its proper divisors (1).

275221171 is an equidigital number, since it uses as much as digits as its factorization.

275221171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1960, while the sum is 28.

The square root of 275221171 is about 16589.7911680648. The cubic root of 275221171 is about 650.4700119284.

The spelling of 275221171 in words is "two hundred seventy-five million, two hundred twenty-one thousand, one hundred seventy-one".