2000045 has 4 divisors (see below), whose sum is σ = 2400060. Its totient is φ = 1600032.

The previous prime is 2000039. The next prime is 2000081. The reversal of 2000045 is 5400002.

2000045 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1394761 + 605284 = 1181^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000045 - 2⁴ = 2000029 is a prime.

2000045 is a modest number, since divided by 45 gives 20 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200000 + ... + 200009.

It is an arithmetic number, because the mean of its divisors is an integer number (600015).

2^2000045 is an apocalyptic number.

It is an amenable number.

2000045 is a deficient number, since it is larger than the sum of its proper divisors (400015).

2000045 is an equidigital number, since it uses as much as digits as its factorization.

2000045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400014.

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 2000045 is about 1414.2294721862. The cubic root of 2000045 is about 125.9930499232.

Adding to 2000045 its reverse (5400002), we get a palindrome (7400047).

The spelling of 2000045 in words is "two million, forty-five", and thus it is an aban number and an uban number.