266262251 has 2 divisors, whose sum is σ = 266262252. Its totient is φ = 266262250.

The previous prime is 266262247. The next prime is 266262259. The reversal of 266262251 is 152262662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266262251 - 2² = 266262247 is a prime.

It is not a weakly prime, because it can be changed into another prime (266262259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133131125 + 133131126.

It is an arithmetic number, because the mean of its divisors is an integer number (133131126).

Almost surely, 2^266262251 is an apocalyptic number.

266262251 is a deficient number, since it is larger than the sum of its proper divisors (1).

266262251 is an equidigital number, since it uses as much as digits as its factorization.

266262251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 266262251 is about 16317.5442698955. The cubic root of 266262251 is about 643.3340425835.

The spelling of 266262251 in words is "two hundred sixty-six million, two hundred sixty-two thousand, two hundred fifty-one".