16530211 has 2 divisors, whose sum is σ = 16530212. Its totient is φ = 16530210.

The previous prime is 16530191. The next prime is 16530221. The reversal of 16530211 is 11203561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16530211 - 2⁵ = 16530179 is a prime.

It is not a weakly prime, because it can be changed into another prime (16530221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8265105 + 8265106.

It is an arithmetic number, because the mean of its divisors is an integer number (8265106).

Almost surely, 2^16530211 is an apocalyptic number.

16530211 is a deficient number, since it is larger than the sum of its proper divisors (1).

16530211 is an equidigital number, since it uses as much as digits as its factorization.

16530211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 16530211 is about 4065.7362186940. The cubic root of 16530211 is about 254.7374511608.

Adding to 16530211 its reverse (11203561), we get a palindrome (27733772).

The spelling of 16530211 in words is "sixteen million, five hundred thirty thousand, two hundred eleven".