255558897 has 18 divisors (see below), whose sum is σ = 405751346. Its totient is φ = 154883520.

The previous prime is 255558883. The next prime is 255558899. The reversal of 255558897 is 798855552.

It is a happy number.

255558897 is a `hidden beast` number, since 2 + 5 + 5 + 558 + 89 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 131882256 + 123676641 = 11484^2 + 11121^2 .

It is not a de Polignac number, because 255558897 - 2⁶ = 255558833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255558899) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 116248 + ... + 118425.

Almost surely, 2^255558897 is an apocalyptic number.

It is an amenable number.

255558897 is a deficient number, since it is larger than the sum of its proper divisors (150192449).

255558897 is a wasteful number, since it uses less digits than its factorization.

255558897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234701 (or 234687 counting only the distinct ones).

The product of its digits is 5040000, while the sum is 54.

The square root of 255558897 is about 15986.2095882670. The cubic root of 255558897 is about 634.5955197885.

The spelling of 255558897 in words is "two hundred fifty-five million, five hundred fifty-eight thousand, eight hundred ninety-seven".