2045289 has 4 divisors (see below), whose sum is σ = 2727056. Its totient is φ = 1363524.

The previous prime is 2045213. The next prime is 2045311. The reversal of 2045289 is 9825402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-2045289 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2045089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340879 + ... + 340884.

It is an arithmetic number, because the mean of its divisors is an integer number (681764).

2^2045289 is an apocalyptic number.

It is an amenable number.

2045289 is a deficient number, since it is larger than the sum of its proper divisors (681767).

2045289 is an equidigital number, since it uses as much as digits as its factorization.

2045289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681766.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 2045289 is about 1430.1360075182. The cubic root of 2045289 is about 126.9360249841.

The spelling of 2045289 in words is "two million, forty-five thousand, two hundred eighty-nine".