2604513 has 4 divisors (see below), whose sum is σ = 3472688. Its totient is φ = 1736340.

The previous prime is 2604509. The next prime is 2604521. The reversal of 2604513 is 3154062.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2604513 - 2² = 2604509 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2604513.

It is not an unprimeable number, because it can be changed into a prime (2604523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434083 + ... + 434088.

It is an arithmetic number, because the mean of its divisors is an integer number (868172).

2^2604513 is an apocalyptic number.

It is an amenable number.

2604513 is a deficient number, since it is larger than the sum of its proper divisors (868175).

2604513 is an equidigital number, since it uses as much as digits as its factorization.

2604513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868174.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2604513 is about 1613.8503648108. The cubic root of 2604513 is about 137.5864007934.

Adding to 2604513 its reverse (3154062), we get a palindrome (5758575).

The spelling of 2604513 in words is "two million, six hundred four thousand, five hundred thirteen".