255560117 has 4 divisors (see below), whose sum is σ = 260382060. Its totient is φ = 250738176.

The previous prime is 255560077. The next prime is 255560141. The reversal of 255560117 is 711065552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182952676 + 72607441 = 13526^2 + 8521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255560117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255560017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2410892 + ... + 2410997.

It is an arithmetic number, because the mean of its divisors is an integer number (65095515).

Almost surely, 2^255560117 is an apocalyptic number.

It is an amenable number.

255560117 is a deficient number, since it is larger than the sum of its proper divisors (4821943).

255560117 is an equidigital number, since it uses as much as digits as its factorization.

255560117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4821942.

The product of its (nonzero) digits is 10500, while the sum is 32.

The square root of 255560117 is about 15986.2477461098. The cubic root of 255560117 is about 634.5965296083.

The spelling of 255560117 in words is "two hundred fifty-five million, five hundred sixty thousand, one hundred seventeen".