16549161 has 8 divisors (see below), whose sum is σ = 22104000. Its totient is φ = 11013552.

The previous prime is 16549129. The next prime is 16549163. The reversal of 16549161 is 16194561.

16549161 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16549161 - 2⁵ = 16549129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16549163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661 + ... + 6338.

It is an arithmetic number, because the mean of its divisors is an integer number (2763000).

Almost surely, 2^16549161 is an apocalyptic number.

It is an amenable number.

16549161 is a deficient number, since it is larger than the sum of its proper divisors (5554839).

16549161 is an equidigital number, since it uses as much as digits as its factorization.

16549161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9615.

The product of its digits is 6480, while the sum is 33.

The square root of 16549161 is about 4068.0660024144. The cubic root of 16549161 is about 254.8347564571.

The spelling of 16549161 in words is "sixteen million, five hundred forty-nine thousand, one hundred sixty-one".