2604445121 has 4 divisors (see below), whose sum is σ = 2741521200. Its totient is φ = 2467369044.

The previous prime is 2604445093. The next prime is 2604445141. The reversal of 2604445121 is 1215444062.

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 a cyclic number.

It is not a de Polignac number, because 2604445121 - 2⁶ = 2604445057 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 (2604445141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68538011 + ... + 68538048.

It is an arithmetic number, because the mean of its divisors is an integer number (685380300).

Almost surely, 2^2604445121 is an apocalyptic number.

It is an amenable number.

2604445121 is a deficient number, since it is larger than the sum of its proper divisors (137076079).

2604445121 is a wasteful number, since it uses less digits than its factorization.

2604445121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137076078.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 2604445121 is about 51033.7645191887. The cubic root of 2604445121 is about 1375.8520552091.

Adding to 2604445121 its reverse (1215444062), we get a palindrome (3819889183).

The spelling of 2604445121 in words is "two billion, six hundred four million, four hundred forty-five thousand, one hundred twenty-one".