16647051 has 4 divisors (see below), whose sum is σ = 22196072. Its totient is φ = 11098032.

The previous prime is 16647049. The next prime is 16647053. The reversal of 16647051 is 15074661.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (16647049) and next prime (16647053).

It is not a de Polignac number, because 16647051 - 2¹ = 16647049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16647053) 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 in 3 ways as a sum of consecutive naturals, for example, 2774506 + ... + 2774511.

It is an arithmetic number, because the mean of its divisors is an integer number (5549018).

Almost surely, 2^16647051 is an apocalyptic number.

16647051 is a deficient number, since it is larger than the sum of its proper divisors (5549021).

16647051 is an equidigital number, since it uses as much as digits as its factorization.

16647051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549020.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 16647051 is about 4080.0797786318. The cubic root of 16647051 is about 255.3362269887.

The spelling of 16647051 in words is "sixteen million, six hundred forty-seven thousand, fifty-one".