266526131 has 2 divisors, whose sum is σ = 266526132. Its totient is φ = 266526130.

The previous prime is 266526121. The next prime is 266526149. The reversal of 266526131 is 131625662.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266526131 is a prime.

It is a super-2 number, since 2×266526131² = 142072357011658322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (266526121) 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, 133263065 + 133263066.

It is an arithmetic number, because the mean of its divisors is an integer number (133263066).

Almost surely, 2^266526131 is an apocalyptic number.

266526131 is a deficient number, since it is larger than the sum of its proper divisors (1).

266526131 is an equidigital number, since it uses as much as digits as its factorization.

266526131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 266526131 is about 16325.6280430494. The cubic root of 266526131 is about 643.5464984561.

The spelling of 266526131 in words is "two hundred sixty-six million, five hundred twenty-six thousand, one hundred thirty-one".