16530523 has 2 divisors, whose sum is σ = 16530524. Its totient is φ = 16530522.

The previous prime is 16530509. The next prime is 16530539. The reversal of 16530523 is 32503561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16530523 is a prime.

It is not a weakly prime, because it can be changed into another prime (16530623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8265261 + 8265262.

It is an arithmetic number, because the mean of its divisors is an integer number (8265262).

Almost surely, 2^16530523 is an apocalyptic number.

16530523 is a deficient number, since it is larger than the sum of its proper divisors (1).

16530523 is an equidigital number, since it uses as much as digits as its factorization.

16530523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 16530523 is about 4065.7745879475. The cubic root of 16530523 is about 254.7390538342.

The spelling of 16530523 in words is "sixteen million, five hundred thirty thousand, five hundred twenty-three".