16530915 has 16 divisors (see below), whose sum is σ = 26899200. Its totient is φ = 8666592.

The previous prime is 16530901. The next prime is 16530929. The reversal of 16530915 is 51903561.

It is an interprime number because it is at equal distance from previous prime (16530901) and next prime (16530929).

It is not a de Polignac number, because 16530915 - 2⁸ = 16530659 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8455 + ... + 10224.

It is an arithmetic number, because the mean of its divisors is an integer number (1681200).

Almost surely, 2^16530915 is an apocalyptic number.

16530915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16530915 is a deficient number, since it is larger than the sum of its proper divisors (10368285).

16530915 is a wasteful number, since it uses less digits than its factorization.

16530915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18746.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 16530915 is about 4065.8227949580. The cubic root of 16530915 is about 254.7410674208.

The spelling of 16530915 in words is "sixteen million, five hundred thirty thousand, nine hundred fifteen".