16505245 has 8 divisors (see below), whose sum is σ = 19830240. Its totient is φ = 13188240.

The previous prime is 16505213. The next prime is 16505261. The reversal of 16505245 is 54250561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16505245 - 2⁵ = 16505213 is a prime.

It is a super-2 number, since 2×16505245² = 544846225020050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4446 + ... + 7264.

It is an arithmetic number, because the mean of its divisors is an integer number (2478780).

Almost surely, 2^16505245 is an apocalyptic number.

It is an amenable number.

16505245 is a deficient number, since it is larger than the sum of its proper divisors (3324995).

16505245 is a wasteful number, since it uses less digits than its factorization.

16505245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 16505245 is about 4062.6647658895. The cubic root of 16505245 is about 254.6091410489.

The spelling of 16505245 in words is "sixteen million, five hundred five thousand, two hundred forty-five".