255556017 has 6 divisors (see below), whose sum is σ = 369136482. Its totient is φ = 170370672.

The previous prime is 255556001. The next prime is 255556039. The reversal of 255556017 is 710655552.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 211877136 + 43678881 = 14556^2 + 6609^2 .

It is not a de Polignac number, because 255556017 - 2⁴ = 255556001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255556057) 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, 14197548 + ... + 14197565.

It is an arithmetic number, because the mean of its divisors is an integer number (61522747).

Almost surely, 2^255556017 is an apocalyptic number.

It is an amenable number.

255556017 is a deficient number, since it is larger than the sum of its proper divisors (113580465).

255556017 is a wasteful number, since it uses less digits than its factorization.

255556017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28395119 (or 28395116 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The square root of 255556017 is about 15986.1195103752. The cubic root of 255556017 is about 634.5931359388.

The spelling of 255556017 in words is "two hundred fifty-five million, five hundred fifty-six thousand, seventeen".