2175161 has 2 divisors, whose sum is σ = 2175162. Its totient is φ = 2175160.

The previous prime is 2175127. The next prime is 2175169. The reversal of 2175161 is 1615712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2119936 + 55225 = 1456^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 2175161 - 2⁶ = 2175097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2175169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1087580 + 1087581.

It is an arithmetic number, because the mean of its divisors is an integer number (1087581).

2^2175161 is an apocalyptic number.

It is an amenable number.

2175161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2175161 is an equidigital number, since it uses as much as digits as its factorization.

2175161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 420, while the sum is 23.

The square root of 2175161 is about 1474.8427034772. The cubic root of 2175161 is about 129.5678152882.

It can be divided in two parts, 21751 and 61, that added together give a palindrome (21812).

The spelling of 2175161 in words is "two million, one hundred seventy-five thousand, one hundred sixty-one".