266212253 has 4 divisors (see below), whose sum is σ = 266915040. Its totient is φ = 265509468.

The previous prime is 266212241. The next prime is 266212313. The reversal of 266212253 is 352212662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 266212253 - 2⁴ = 266212237 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 (266212213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350825 + ... + 351582.

It is an arithmetic number, because the mean of its divisors is an integer number (66728760).

Almost surely, 2^266212253 is an apocalyptic number.

It is an amenable number.

266212253 is a deficient number, since it is larger than the sum of its proper divisors (702787).

266212253 is an equidigital number, since it uses as much as digits as its factorization.

266212253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702786.

The product of its digits is 8640, while the sum is 29.

The square root of 266212253 is about 16316.0121659675. The cubic root of 266212253 is about 643.2937722249.

The spelling of 266212253 in words is "two hundred sixty-six million, two hundred twelve thousand, two hundred fifty-three".