216255056 has 20 divisors (see below), whose sum is σ = 419755872. Its totient is φ = 107930976.

The previous prime is 216255049. The next prime is 216255073. The reversal of 216255056 is 650552612.

216255056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2996 + ... + 21011.

Almost surely, 2^216255056 is an apocalyptic number.

It is an amenable number.

216255056 is a deficient number, since it is larger than the sum of its proper divisors (203500816).

216255056 is a wasteful number, since it uses less digits than its factorization.

216255056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24578 (or 24572 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 216255056 is about 14705.6130780053. The cubic root of 216255056 is about 600.2360700690.

The spelling of 216255056 in words is "two hundred sixteen million, two hundred fifty-five thousand, fifty-six".