2145089 has 2 divisors, whose sum is σ = 2145090. Its totient is φ = 2145088.

The previous prime is 2145083. The next prime is 2145097. The reversal of 2145089 is 9805412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 935089 = 1100^2 + 967^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145089 - 2¹² = 2140993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₁₅₈₉₂₄ and since 2145089 and 158924 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2145083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072544 + 1072545.

It is an arithmetic number, because the mean of its divisors is an integer number (1072545).

2^2145089 is an apocalyptic number.

It is an amenable number.

2145089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145089 is an equidigital number, since it uses as much as digits as its factorization.

2145089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2145089 is about 1464.6122353715. The cubic root of 2145089 is about 128.9679426782.

The spelling of 2145089 in words is "two million, one hundred forty-five thousand, eighty-nine".