255756961 has 8 divisors (see below), whose sum is σ = 257012000. Its totient is φ = 254505888.

The previous prime is 255756953. The next prime is 255756971. The reversal of 255756961 is 169657552.

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 255756961 - 2³ = 255756953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255756911) 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, 272485 + ... + 273421.

It is an arithmetic number, because the mean of its divisors is an integer number (32126500).

Almost surely, 2^255756961 is an apocalyptic number.

It is an amenable number.

255756961 is a deficient number, since it is larger than the sum of its proper divisors (1255039).

255756961 is an equidigital number, since it uses as much as digits as its factorization.

255756961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983.

The product of its digits is 567000, while the sum is 46.

The square root of 255756961 is about 15992.4032277829. The cubic root of 255756961 is about 634.7594194759.

The spelling of 255756961 in words is "two hundred fifty-five million, seven hundred fifty-six thousand, nine hundred sixty-one".