216443055 has 8 divisors (see below), whose sum is σ = 346308912. Its totient is φ = 115436288.

The previous prime is 216443053. The next prime is 216443077. The reversal of 216443055 is 550344612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216443055 - 2¹ = 216443053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216443053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7214754 + ... + 7214783.

It is an arithmetic number, because the mean of its divisors is an integer number (43288614).

Almost surely, 2^216443055 is an apocalyptic number.

216443055 is a deficient number, since it is larger than the sum of its proper divisors (129865857).

216443055 is a wasteful number, since it uses less digits than its factorization.

216443055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14429545.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 216443055 is about 14712.0037724302. The cubic root of 216443055 is about 600.4099559409.

Adding to 216443055 its reverse (550344612), we get a palindrome (766787667).

The spelling of 216443055 in words is "two hundred sixteen million, four hundred forty-three thousand, fifty-five".