255150221 has 4 divisors (see below), whose sum is σ = 268579200. Its totient is φ = 241721244.

The previous prime is 255150191. The next prime is 255150223. The reversal of 255150221 is 122051552.

255150221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 255150221 - 2¹⁰ = 255149197 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 (255150223) 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, 6714461 + ... + 6714498.

It is an arithmetic number, because the mean of its divisors is an integer number (67144800).

Almost surely, 2^255150221 is an apocalyptic number.

It is an amenable number.

255150221 is a deficient number, since it is larger than the sum of its proper divisors (13428979).

255150221 is a wasteful number, since it uses less digits than its factorization.

255150221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13428978.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 255150221 is about 15973.4223321116. The cubic root of 255150221 is about 634.2570690078.

The spelling of 255150221 in words is "two hundred fifty-five million, one hundred fifty thousand, two hundred twenty-one".