16520063 has 16 divisors (see below), whose sum is σ = 19998720. Its totient is φ = 13330656.

The previous prime is 16520027. The next prime is 16520099. The reversal of 16520063 is 36002561.

It is an interprime number because it is at equal distance from previous prime (16520027) and next prime (16520099).

It is a cyclic number.

It is not a de Polignac number, because 16520063 - 2⁶ = 16519999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16520263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29381 + ... + 29937.

It is an arithmetic number, because the mean of its divisors is an integer number (1249920).

Almost surely, 2^16520063 is an apocalyptic number.

16520063 is a deficient number, since it is larger than the sum of its proper divisors (3478657).

16520063 is a wasteful number, since it uses less digits than its factorization.

16520063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 16520063 is about 4064.4880366413. The cubic root of 16520063 is about 254.6853121847.

The spelling of 16520063 in words is "sixteen million, five hundred twenty thousand, sixty-three".