216375255 has 12 divisors (see below), whose sum is σ = 375050520. Its totient is φ = 115400112.

The previous prime is 216375253. The next prime is 216375259. The reversal of 216375255 is 552573612.

It is not a de Polignac number, because 216375255 - 2¹ = 216375253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216375253) 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 11 ways as a sum of consecutive naturals, for example, 2404125 + ... + 2404214.

It is an arithmetic number, because the mean of its divisors is an integer number (31254210).

Almost surely, 2^216375255 is an apocalyptic number.

216375255 is a deficient number, since it is larger than the sum of its proper divisors (158675265).

216375255 is a wasteful number, since it uses less digits than its factorization.

216375255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4808350 (or 4808347 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 216375255 is about 14709.6993511084. The cubic root of 216375255 is about 600.3472573152.

The spelling of 216375255 in words is "two hundred sixteen million, three hundred seventy-five thousand, two hundred fifty-five".