3072161 has 2 divisors, whose sum is σ = 3072162. Its totient is φ = 3072160.

The previous prime is 3072137. The next prime is 3072163. The reversal of 3072161 is 1612703.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3041536 + 30625 = 1744^2 + 175^2 .

It is an emirp because it is prime and its reverse (1612703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3072161 - 2¹⁰ = 3071137 is a prime.

It is a Sophie Germain prime.

Together with 3072163, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3072163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1536080 + 1536081.

It is an arithmetic number, because the mean of its divisors is an integer number (1536081).

Almost surely, 2^3072161 is an apocalyptic number.

It is an amenable number.

3072161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3072161 is an equidigital number, since it uses as much as digits as its factorization.

3072161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 3072161 is about 1752.7581122334. The cubic root of 3072161 is about 145.3721869344.

Adding to 3072161 its reverse (1612703), we get a palindrome (4684864).

The spelling of 3072161 in words is "three million, seventy-two thousand, one hundred sixty-one".