2175109 has 2 divisors, whose sum is σ = 2175110. Its totient is φ = 2175108.

The previous prime is 2175097. The next prime is 2175127. The reversal of 2175109 is 9015712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1404225 + 770884 = 1185^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 2175109 - 2⁷ = 2174981 is a prime.

It is equal to p₁₆₀₉₈₁ and since 2175109 and 160981 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1087554 + 1087555.

It is an arithmetic number, because the mean of its divisors is an integer number (1087555).

2^2175109 is an apocalyptic number.

It is an amenable number.

2175109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2175109 is an equidigital number, since it uses as much as digits as its factorization.

2175109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 2175109 is about 1474.8250743732. The cubic root of 2175109 is about 129.5667827853.

The spelling of 2175109 in words is "two million, one hundred seventy-five thousand, one hundred nine".