16166047 has 4 divisors (see below), whose sum is σ = 16208640. Its totient is φ = 16123456.

The previous prime is 16166041. The next prime is 16166057. The reversal of 16166047 is 74066161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16166047 is a prime.

It is a super-3 number, since 3×16166047³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16166041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20722 + ... + 21487.

It is an arithmetic number, because the mean of its divisors is an integer number (4052160).

Almost surely, 2^16166047 is an apocalyptic number.

16166047 is a deficient number, since it is larger than the sum of its proper divisors (42593).

16166047 is an equidigital number, since it uses as much as digits as its factorization.

16166047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42592.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 16166047 is about 4020.7023018373. The cubic root of 16166047 is about 252.8529039172.

The spelling of 16166047 in words is "sixteen million, one hundred sixty-six thousand, forty-seven".