255516117 has 16 divisors (see below), whose sum is σ = 353308800. Its totient is φ = 164123712.

The previous prime is 255516113. The next prime is 255516119. The reversal of 255516117 is 711615552.

It is a happy number.

It is not a de Polignac number, because 255516117 - 2² = 255516113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255516113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259 + ... + 22607.

It is an arithmetic number, because the mean of its divisors is an integer number (22081800).

Almost surely, 2^255516117 is an apocalyptic number.

It is an amenable number.

255516117 is a deficient number, since it is larger than the sum of its proper divisors (97792683).

255516117 is a wasteful number, since it uses less digits than its factorization.

255516117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22492.

The product of its digits is 10500, while the sum is 33.

The square root of 255516117 is about 15984.8715040190. The cubic root of 255516117 is about 634.5601078454.

The spelling of 255516117 in words is "two hundred fifty-five million, five hundred sixteen thousand, one hundred seventeen".