255977281 has 12 divisors (see below), whose sum is σ = 305822272. Its totient is φ = 209866536.

The previous prime is 255977273. The next prime is 255977297. The reversal of 255977281 is 182779552.

It is a happy number.

255977281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 255977281 - 2³ = 255977273 is a prime.

It is a super-2 number, since 2×255977281² = 131048736776305922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255977221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30861 + ... + 38266.

Almost surely, 2^255977281 is an apocalyptic number.

It is an amenable number.

255977281 is a deficient number, since it is larger than the sum of its proper divisors (49844991).

255977281 is an equidigital number, since it uses as much as digits as its factorization.

255977281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69180 (or 69157 counting only the distinct ones).

The product of its digits is 352800, while the sum is 46.

The square root of 255977281 is about 15999.2900154976. The cubic root of 255977281 is about 634.9416368126.

The spelling of 255977281 in words is "two hundred fifty-five million, nine hundred seventy-seven thousand, two hundred eighty-one".