2043505 has 4 divisors (see below), whose sum is σ = 2452212. Its totient is φ = 1634800.

The previous prime is 2043497. The next prime is 2043511. The reversal of 2043505 is 5053402.

It is a happy number.

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 1430416 + 613089 = 1196^2 + 783^2 .

It is not a de Polignac number, because 2043505 - 2³ = 2043497 is a prime.

It is a Duffinian number.

2043505 is a lucky number.

It is an unprimeable number.

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, 204346 + ... + 204355.

It is an arithmetic number, because the mean of its divisors is an integer number (613053).

2^2043505 is an apocalyptic number.

It is an amenable number.

2043505 is a deficient number, since it is larger than the sum of its proper divisors (408707).

2043505 is an equidigital number, since it uses as much as digits as its factorization.

2043505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408706.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 2043505 is about 1429.5121545478. The cubic root of 2043505 is about 126.8991076679.

Adding to 2043505 its reverse (5053402), we get a palindrome (7096907).

The spelling of 2043505 in words is "two million, forty-three thousand, five hundred five".