216023255 has 16 divisors (see below), whose sum is σ = 311854080. Its totient is φ = 140333472.

The previous prime is 216023237. The next prime is 216023261. The reversal of 216023255 is 552320612.

It is a cyclic number.

It is not a de Polignac number, because 216023255 - 2¹⁰ = 216022231 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161759 + ... + 163088.

It is an arithmetic number, because the mean of its divisors is an integer number (19490880).

Almost surely, 2^216023255 is an apocalyptic number.

216023255 is a deficient number, since it is larger than the sum of its proper divisors (95830825).

216023255 is a wasteful number, since it uses less digits than its factorization.

216023255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324878.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 216023255 is about 14697.7295865722. The cubic root of 216023255 is about 600.0215316347.

Adding to 216023255 its reverse (552320612), we get a palindrome (768343867).

The spelling of 216023255 in words is "two hundred sixteen million, twenty-three thousand, two hundred fifty-five".