2305505 has 4 divisors (see below), whose sum is σ = 2766612. Its totient is φ = 1844400.

The previous prime is 2305487. The next prime is 2305549. The reversal of 2305505 is 5055032.

2305505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1628176 + 677329 = 1276^2 + 823^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2305505 is a prime.

It is a Duffinian number.

It is a Curzon 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, 230546 + ... + 230555.

It is an arithmetic number, because the mean of its divisors is an integer number (691653).

2^2305505 is an apocalyptic number.

It is an amenable number.

2305505 is a deficient number, since it is larger than the sum of its proper divisors (461107).

2305505 is an equidigital number, since it uses as much as digits as its factorization.

2305505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461106.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 2305505 is about 1518.3889488534. The cubic root of 2305505 is about 132.1058418011.

The spelling of 2305505 in words is "two million, three hundred five thousand, five hundred five".