16530923 has 4 divisors (see below), whose sum is σ = 16757448. Its totient is φ = 16304400.

The previous prime is 16530901. The next prime is 16530929. The reversal of 16530923 is 32903561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16530923 - 2¹⁴ = 16514539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16530929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113153 + ... + 113298.

It is an arithmetic number, because the mean of its divisors is an integer number (4189362).

Almost surely, 2^16530923 is an apocalyptic number.

16530923 is a deficient number, since it is larger than the sum of its proper divisors (226525).

16530923 is an equidigital number, since it uses as much as digits as its factorization.

16530923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226524.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 16530923 is about 4065.8237787686. The cubic root of 16530923 is about 254.7411085141.

The spelling of 16530923 in words is "sixteen million, five hundred thirty thousand, nine hundred twenty-three".