16530539 has 2 divisors, whose sum is σ = 16530540. Its totient is φ = 16530538.

The previous prime is 16530523. The next prime is 16530571. The reversal of 16530539 is 93503561.

It is an a-pointer prime, because the next prime (16530571) can be obtained adding 16530539 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16530539 - 2⁴ = 16530523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16530509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8265269 + 8265270.

It is an arithmetic number, because the mean of its divisors is an integer number (8265270).

Almost surely, 2^16530539 is an apocalyptic number.

16530539 is a deficient number, since it is larger than the sum of its proper divisors (1).

16530539 is an equidigital number, since it uses as much as digits as its factorization.

16530539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 16530539 is about 4065.7765555918. The cubic root of 16530539 is about 254.7391360220.

The spelling of 16530539 in words is "sixteen million, five hundred thirty thousand, five hundred thirty-nine".