2503505 has 8 divisors (see below), whose sum is σ = 3181032. Its totient is φ = 1884928.

The previous prime is 2503499. The next prime is 2503507. The reversal of 2503505 is 5053052.

It can be written as a sum of positive squares in 4 ways, for example, as 495616 + 2007889 = 704^2 + 1417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2503505 - 2¹⁰ = 2502481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2503507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14642 + ... + 14811.

It is an arithmetic number, because the mean of its divisors is an integer number (397629).

2^2503505 is an apocalyptic number.

It is an amenable number.

2503505 is a deficient number, since it is larger than the sum of its proper divisors (677527).

2503505 is a wasteful number, since it uses less digits than its factorization.

2503505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29475.

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

The square root of 2503505 is about 1582.2468201896. The cubic root of 2503505 is about 135.7842781030.

Adding to 2503505 its reverse (5053052), we get a palindrome (7556557).

The spelling of 2503505 in words is "two million, five hundred three thousand, five hundred five".