2503305 has 40 divisors (see below), whose sum is σ = 5134272. Its totient is φ = 1143072.

The previous prime is 2503283. The next prime is 2503313. The reversal of 2503305 is 5033052.

It is not a de Polignac number, because 2503305 - 2⁹ = 2502793 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2394 + ... + 3276.

2^2503305 is an apocalyptic number.

It is an amenable number.

2503305 is an abundant number, since it is smaller than the sum of its proper divisors (2630967).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2503305 is an equidigital number, since it uses as much as digits as its factorization.

2503305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 2503305 is about 1582.1836176626. The cubic root of 2503305 is about 135.7806621620.

Adding to 2503305 its reverse (5033052), we get a palindrome (7536357).

The spelling of 2503305 in words is "two million, five hundred three thousand, three hundred five".