2504445021 has 16 divisors (see below), whose sum is σ = 3995696320. Its totient is φ = 1541196720.

The previous prime is 2504444977. The next prime is 2504445029. The reversal of 2504445021 is 1205444052.

2504445021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2504445021 - 2⁷ = 2504444893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2504445029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3567235 + ... + 3567936.

It is an arithmetic number, because the mean of its divisors is an integer number (249731020).

Almost surely, 2^2504445021 is an apocalyptic number.

It is an amenable number.

2504445021 is a deficient number, since it is larger than the sum of its proper divisors (1491251299).

2504445021 is a wasteful number, since it uses less digits than its factorization.

2504445021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135193 (or 7135187 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2504445021 is about 50044.4304693339. The cubic root of 2504445021 is about 1358.0127082591.

Adding to 2504445021 its reverse (1205444052), we get a palindrome (3709889073).

The spelling of 2504445021 in words is "two billion, five hundred four million, four hundred forty-five thousand, twenty-one".