216541027 has 2 divisors, whose sum is σ = 216541028. Its totient is φ = 216541026.

The previous prime is 216541001. The next prime is 216541037. The reversal of 216541027 is 720145612.

216541027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216541027 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 216540986 and 216541004.

It is not a weakly prime, because it can be changed into another prime (216541037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108270513 + 108270514.

It is an arithmetic number, because the mean of its divisors is an integer number (108270514).

Almost surely, 2^216541027 is an apocalyptic number.

216541027 is a deficient number, since it is larger than the sum of its proper divisors (1).

216541027 is an equidigital number, since it uses as much as digits as its factorization.

216541027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 216541027 is about 14715.3330577327. Note that the first 3 decimals coincide. The cubic root of 216541027 is about 600.5005332539.

Adding to 216541027 its reverse (720145612), we get a palindrome (936686639).

The spelling of 216541027 in words is "two hundred sixteen million, five hundred forty-one thousand, twenty-seven".