2504645 has 32 divisors (see below), whose sum is σ = 3677184. Its totient is φ = 1612800.

The previous prime is 2504639. The next prime is 2504657. The reversal of 2504645 is 5464052.

It is not a de Polignac number, because 2504645 - 2⁴ = 2504629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22109 + ... + 22221.

It is an arithmetic number, because the mean of its divisors is an integer number (114912).

2^2504645 is an apocalyptic number.

It is an amenable number.

2504645 is a deficient number, since it is larger than the sum of its proper divisors (1172539).

2504645 is a wasteful number, since it uses less digits than its factorization.

2504645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2504645 is about 1582.6070263966. The cubic root of 2504645 is about 135.8048852900.

Adding to 2504645 its reverse (5464052), we get a palindrome (7968697).

The spelling of 2504645 in words is "two million, five hundred four thousand, six hundred forty-five".