216051089 has 2 divisors, whose sum is σ = 216051090. Its totient is φ = 216051088.

The previous prime is 216051061. The next prime is 216051119. The reversal of 216051089 is 980150612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108576400 + 107474689 = 10420^2 + 10367^2 .

It is a cyclic number.

It is not a de Polignac number, because 216051089 - 2²⁴ = 199273873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216051289) by changing a digit.

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 as a sum of consecutive naturals, namely, 108025544 + 108025545.

It is an arithmetic number, because the mean of its divisors is an integer number (108025545).

Almost surely, 2^216051089 is an apocalyptic number.

It is an amenable number.

216051089 is a deficient number, since it is larger than the sum of its proper divisors (1).

216051089 is an equidigital number, since it uses as much as digits as its factorization.

216051089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 216051089 is about 14698.6764370130. The cubic root of 216051089 is about 600.0473009006.

The spelling of 216051089 in words is "two hundred sixteen million, fifty-one thousand, eighty-nine".