16505275 has 12 divisors (see below), whose sum is σ = 20530432. Its totient is φ = 13163040.

The previous prime is 16505273. The next prime is 16505303. The reversal of 16505275 is 57250561.

It is not a de Polignac number, because 16505275 - 2¹ = 16505273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16505273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9094 + ... + 10756.

Almost surely, 2^16505275 is an apocalyptic number.

16505275 is a deficient number, since it is larger than the sum of its proper divisors (4025157).

16505275 is a wasteful number, since it uses less digits than its factorization.

16505275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070 (or 2065 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 16505275 is about 4062.6684580458. The cubic root of 16505275 is about 254.6092953083.

The spelling of 16505275 in words is "sixteen million, five hundred five thousand, two hundred seventy-five".