266466251 has 2 divisors, whose sum is σ = 266466252. Its totient is φ = 266466250.

The previous prime is 266466217. The next prime is 266466259. The reversal of 266466251 is 152664662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266466251 is a prime.

It is not a weakly prime, because it can be changed into another prime (266466259) 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 as a sum of consecutive naturals, namely, 133233125 + 133233126.

It is an arithmetic number, because the mean of its divisors is an integer number (133233126).

Almost surely, 2^266466251 is an apocalyptic number.

266466251 is a deficient number, since it is larger than the sum of its proper divisors (1).

266466251 is an equidigital number, since it uses as much as digits as its factorization.

266466251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The square root of 266466251 is about 16323.7940136477. The cubic root of 266466251 is about 643.4982999919.

The spelling of 266466251 in words is "two hundred sixty-six million, four hundred sixty-six thousand, two hundred fifty-one".