2504304421 has 4 divisors (see below), whose sum is σ = 2504684844. Its totient is φ = 2503924000.

The previous prime is 2504304409. The next prime is 2504304427. The reversal of 2504304421 is 1244034052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1981496196 + 522808225 = 44514^2 + 22865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2504304421 - 2¹³ = 2504296229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2504304427) 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, 180160 + ... + 193561.

It is an arithmetic number, because the mean of its divisors is an integer number (626171211).

Almost surely, 2^2504304421 is an apocalyptic number.

It is an amenable number.

2504304421 is a deficient number, since it is larger than the sum of its proper divisors (380423).

2504304421 is an equidigital number, since it uses as much as digits as its factorization.

2504304421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380422.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2504304421 is about 50043.0256978932. The cubic root of 2504304421 is about 1357.9872947566.

Adding to 2504304421 its reverse (1244034052), we get a palindrome (3748338473).

The spelling of 2504304421 in words is "two billion, five hundred four million, three hundred four thousand, four hundred twenty-one".