255861297 has 6 divisors (see below), whose sum is σ = 369577442. Its totient is φ = 170574192.

The previous prime is 255861283. The next prime is 255861301. The reversal of 255861297 is 792168552.

255861297 is a `hidden beast` number, since 2 + 558 + 6 + 1 + 2 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 141991056 + 113870241 = 11916^2 + 10671^2 .

It is not a de Polignac number, because 255861297 - 2¹² = 255857201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255861227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14214508 + ... + 14214525.

Almost surely, 2^255861297 is an apocalyptic number.

It is an amenable number.

255861297 is a deficient number, since it is larger than the sum of its proper divisors (113716145).

255861297 is a wasteful number, since it uses less digits than its factorization.

255861297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28429039 (or 28429036 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 255861297 is about 15995.6649439778. The cubic root of 255861297 is about 634.8457243994.

The spelling of 255861297 in words is "two hundred fifty-five million, eight hundred sixty-one thousand, two hundred ninety-seven".