266172271 has 2 divisors, whose sum is σ = 266172272. Its totient is φ = 266172270.

The previous prime is 266172161. The next prime is 266172299. The reversal of 266172271 is 172271662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266172271 - 2⁷ = 266172143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266172371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133086135 + 133086136.

It is an arithmetic number, because the mean of its divisors is an integer number (133086136).

Almost surely, 2^266172271 is an apocalyptic number.

266172271 is a deficient number, since it is larger than the sum of its proper divisors (1).

266172271 is an equidigital number, since it uses as much as digits as its factorization.

266172271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 34.

The square root of 266172271 is about 16314.7868818443. The cubic root of 266172271 is about 643.2615655189.

The spelling of 266172271 in words is "two hundred sixty-six million, one hundred seventy-two thousand, two hundred seventy-one".