2504321 has 8 divisors (see below), whose sum is σ = 2717064. Its totient is φ = 2298880.

The previous prime is 2504317. The next prime is 2504323. The reversal of 2504321 is 1234052.

It can be written as a sum of positive squares in 4 ways, for example, as 67600 + 2436721 = 260^2 + 1561^2 .

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 2504321 - 2² = 2504317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2504321.

It is not an unprimeable number, because it can be changed into a prime (2504323) 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, 1100 + ... + 2493.

It is an arithmetic number, because the mean of its divisors is an integer number (339633).

2^2504321 is an apocalyptic number.

It is an amenable number.

2504321 is a deficient number, since it is larger than the sum of its proper divisors (212743).

2504321 is a wasteful number, since it uses less digits than its factorization.

2504321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2504321 is about 1582.5046603407. The cubic root of 2504321 is about 135.7990291466.

Adding to 2504321 its reverse (1234052), we get a palindrome (3738373).

The spelling of 2504321 in words is "two million, five hundred four thousand, three hundred twenty-one".