16061161 has 4 divisors (see below), whose sum is σ = 16074324. Its totient is φ = 16048000.

The previous prime is 16061159. The next prime is 16061189. The reversal of 16061161 is 16116061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16116061 = 13 ⋅1239697.

It can be written as a sum of positive squares in 2 ways, for example, as 5433561 + 10627600 = 2331^2 + 3260^2 .

It is a cyclic number.

It is not a de Polignac number, because 16061161 - 2¹ = 16061159 is a prime.

It is a Smith number, since the sum of its digits (22) 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 not an unprimeable number, because it can be changed into a prime (16061261) 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, 4540 + ... + 7261.

It is an arithmetic number, because the mean of its divisors is an integer number (4018581).

Almost surely, 2^16061161 is an apocalyptic number.

It is an amenable number.

16061161 is a deficient number, since it is larger than the sum of its proper divisors (13163).

16061161 is a wasteful number, since it uses less digits than its factorization.

16061161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13162.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 16061161 is about 4007.6378329385. The cubic root of 16061161 is about 252.3048768662.

The spelling of 16061161 in words is "sixteen million, sixty-one thousand, one hundred sixty-one".