266252593 has 2 divisors, whose sum is σ = 266252594. Its totient is φ = 266252592.

The previous prime is 266252563. The next prime is 266252633. The reversal of 266252593 is 395252662.

It is an a-pointer prime, because the next prime (266252633) can be obtained adding 266252593 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223113969 + 43138624 = 14937^2 + 6568^2 .

It is a cyclic number.

It is not a de Polignac number, because 266252593 - 2⁹ = 266252081 is a prime.

It is not a weakly prime, because it can be changed into another prime (266252533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133126296 + 133126297.

It is an arithmetic number, because the mean of its divisors is an integer number (133126297).

Almost surely, 2^266252593 is an apocalyptic number.

It is an amenable number.

266252593 is a deficient number, since it is larger than the sum of its proper divisors (1).

266252593 is an equidigital number, since it uses as much as digits as its factorization.

266252593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 40.

The square root of 266252593 is about 16317.2483280730. The cubic root of 266252593 is about 643.3262640428.

It can be divided in two parts, 2662 and 52593, that added together give a palindrome (55255).

The spelling of 266252593 in words is "two hundred sixty-six million, two hundred fifty-two thousand, five hundred ninety-three".