16520099 has 2 divisors, whose sum is σ = 16520100. Its totient is φ = 16520098.

The previous prime is 16520027. The next prime is 16520137. The reversal of 16520099 is 99002561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16520099 - 2¹⁶ = 16454563 is a prime.

It is not a weakly prime, because it can be changed into another prime (16526099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8260049 + 8260050.

It is an arithmetic number, because the mean of its divisors is an integer number (8260050).

Almost surely, 2^16520099 is an apocalyptic number.

16520099 is a deficient number, since it is larger than the sum of its proper divisors (1).

16520099 is an equidigital number, since it uses as much as digits as its factorization.

16520099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 16520099 is about 4064.4924652409. The cubic root of 16520099 is about 254.6854971852.

The spelling of 16520099 in words is "sixteen million, five hundred twenty thousand, ninety-nine".