266273253 has 6 divisors (see below), whose sum is σ = 384616934. Its totient is φ = 177515496.

The previous prime is 266273237. The next prime is 266273279. The reversal of 266273253 is 352372662.

It is a happy number.

266273253 is a `hidden beast` number, since 2 + 6 + 627 + 3 + 25 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 182331009 + 83942244 = 13503^2 + 9162^2 .

It is not a de Polignac number, because 266273253 - 2⁴ = 266273237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266273233) 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 in 5 ways as a sum of consecutive naturals, for example, 14792950 + ... + 14792967.

Almost surely, 2^266273253 is an apocalyptic number.

It is an amenable number.

266273253 is a deficient number, since it is larger than the sum of its proper divisors (118343681).

266273253 is a wasteful number, since it uses less digits than its factorization.

266273253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29585923 (or 29585920 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 266273253 is about 16317.8813882195. The cubic root of 266273253 is about 643.3429033509.

The spelling of 266273253 in words is "two hundred sixty-six million, two hundred seventy-three thousand, two hundred fifty-three".