266001271 has 2 divisors, whose sum is σ = 266001272. Its totient is φ = 266001270.

The previous prime is 266001259. The next prime is 266001283. The reversal of 266001271 is 172100662.

It is a balanced prime because it is at equal distance from previous prime (266001259) and next prime (266001283).

It is a cyclic number.

It is not a de Polignac number, because 266001271 - 2⁷ = 266001143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266001971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133000635 + 133000636.

It is an arithmetic number, because the mean of its divisors is an integer number (133000636).

Almost surely, 2^266001271 is an apocalyptic number.

266001271 is a deficient number, since it is larger than the sum of its proper divisors (1).

266001271 is an equidigital number, since it uses as much as digits as its factorization.

266001271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 266001271 is about 16309.5453952586. The cubic root of 266001271 is about 643.1237834584.

The spelling of 266001271 in words is "two hundred sixty-six million, one thousand, two hundred seventy-one".