2171089 has 2 divisors, whose sum is σ = 2171090. Its totient is φ = 2171088.

The previous prime is 2171077. The next prime is 2171101. The reversal of 2171089 is 9801712.

It is a balanced prime because it is at equal distance from previous prime (2171077) and next prime (2171101).

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 321489 = 1360^2 + 567^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171089 - 2¹⁵ = 2138321 is a prime.

It is not a weakly prime, because it can be changed into another prime (2171989) 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, 1085544 + 1085545.

It is an arithmetic number, because the mean of its divisors is an integer number (1085545).

2^2171089 is an apocalyptic number.

It is an amenable number.

2171089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171089 is an equidigital number, since it uses as much as digits as its factorization.

2171089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 2171089 is about 1473.4615705881. The cubic root of 2171089 is about 129.4869125079.

The spelling of 2171089 in words is "two million, one hundred seventy-one thousand, eighty-nine".