266227457 has 4 divisors (see below), whose sum is σ = 266263380. Its totient is φ = 266191536.

The previous prime is 266227441. The next prime is 266227459. The reversal of 266227457 is 754722662.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 241615936 + 24611521 = 15544^2 + 4961^2 .

It is a cyclic number.

It is not a de Polignac number, because 266227457 - 2⁴ = 266227441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266227459) 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, 2282 + ... + 23187.

It is an arithmetic number, because the mean of its divisors is an integer number (66565845).

Almost surely, 2^266227457 is an apocalyptic number.

It is an amenable number.

266227457 is a deficient number, since it is larger than the sum of its proper divisors (35923).

266227457 is a wasteful number, since it uses less digits than its factorization.

266227457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35922.

The product of its digits is 282240, while the sum is 41.

The square root of 266227457 is about 16316.4780819882. The cubic root of 266227457 is about 643.3060186589.

The spelling of 266227457 in words is "two hundred sixty-six million, two hundred twenty-seven thousand, four hundred fifty-seven".