6165161 has 4 divisors (see below), whose sum is σ = 6185172. Its totient is φ = 6145152.

The previous prime is 6165121. The next prime is 6165191. The reversal of 6165161 is 1615616.

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

It can be written as a sum of positive squares in 2 ways, for example, as 313600 + 5851561 = 560^2 + 2419^2 .

It is a cyclic number.

It is not a de Polignac number, because 6165161 - 2⁶ = 6165097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6165161.

It is not an unprimeable number, because it can be changed into a prime (6165121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9536 + ... + 10161.

It is an arithmetic number, because the mean of its divisors is an integer number (1546293).

Almost surely, 2^6165161 is an apocalyptic number.

It is an amenable number.

6165161 is a deficient number, since it is larger than the sum of its proper divisors (20011).

6165161 is a wasteful number, since it uses less digits than its factorization.

6165161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20010.

The product of its digits is 1080, while the sum is 26.

The square root of 6165161 is about 2482.9742245944. The cubic root of 6165161 is about 183.3643095501.

The spelling of 6165161 in words is "six million, one hundred sixty-five thousand, one hundred sixty-one".