255717241 has 8 divisors (see below), whose sum is σ = 275845640. Its totient is φ = 235654272.

The previous prime is 255717223. The next prime is 255717251. The reversal of 255717241 is 142717552.

It can be written as a sum of positive squares in 4 ways, for example, as 60528400 + 195188841 = 7780^2 + 13971^2 .

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 255717241 - 2⁷ = 255717113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255717197 and 255717206.

It is not an unprimeable number, because it can be changed into a prime (255717251) 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, 8076 + ... + 24013.

It is an arithmetic number, because the mean of its divisors is an integer number (34480705).

Almost surely, 2^255717241 is an apocalyptic number.

It is an amenable number.

255717241 is a deficient number, since it is larger than the sum of its proper divisors (20128399).

255717241 is a wasteful number, since it uses less digits than its factorization.

255717241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32715.

The product of its digits is 19600, while the sum is 34.

The square root of 255717241 is about 15991.1613399403. The cubic root of 255717241 is about 634.7265576144.

The spelling of 255717241 in words is "two hundred fifty-five million, seven hundred seventeen thousand, two hundred forty-one".