266253081 has 8 divisors (see below), whose sum is σ = 355085280. Its totient is φ = 177461472.

The previous prime is 266253059. The next prime is 266253121. The reversal of 266253081 is 180352662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 266253081 - 2⁷ = 266252953 is a prime.

It is a super-2 number, since 2×266253081² = 141781406283985122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266253011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12181 + ... + 26093.

It is an arithmetic number, because the mean of its divisors is an integer number (44385660).

Almost surely, 2^266253081 is an apocalyptic number.

It is an amenable number.

266253081 is a deficient number, since it is larger than the sum of its proper divisors (88832199).

266253081 is a wasteful number, since it uses less digits than its factorization.

266253081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20295.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 266253081 is about 16317.2632815678. The cubic root of 266253081 is about 643.3266570818.

The spelling of 266253081 in words is "two hundred sixty-six million, two hundred fifty-three thousand, eighty-one".