255266221 has 8 divisors (see below), whose sum is σ = 292081664. Its totient is φ = 218538000.

The previous prime is 255266201. The next prime is 255266227. The reversal of 255266221 is 122662552.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 255266221 - 2⁹ = 255265709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255266227) 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 7 ways as a sum of consecutive naturals, for example, 15405 + ... + 27346.

It is an arithmetic number, because the mean of its divisors is an integer number (36510208).

Almost surely, 2^255266221 is an apocalyptic number.

It is an amenable number.

255266221 is a deficient number, since it is larger than the sum of its proper divisors (36815443).

255266221 is an equidigital number, since it uses as much as digits as its factorization.

255266221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43611.

The product of its digits is 14400, while the sum is 31.

The square root of 255266221 is about 15977.0529510295. The cubic root of 255266221 is about 634.3531727499.

The spelling of 255266221 in words is "two hundred fifty-five million, two hundred sixty-six thousand, two hundred twenty-one".