2504005021 has 8 divisors (see below), whose sum is σ = 3030056640. Its totient is φ = 2020037568.

The previous prime is 2504005019. The next prime is 2504005027. The reversal of 2504005021 is 1205004052.

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 2504005021 - 2¹ = 2504005019 is a prime.

It is a super-2 number, since 2×2504005021² = 12540082290386420882, which contains 22 as substring.

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 2504005021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2504005027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10520911 + ... + 10521148.

It is an arithmetic number, because the mean of its divisors is an integer number (378757080).

Almost surely, 2^2504005021 is an apocalyptic number.

It is an amenable number.

2504005021 is a deficient number, since it is larger than the sum of its proper divisors (526051619).

2504005021 is a wasteful number, since it uses less digits than its factorization.

2504005021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21042083.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 2504005021 is about 50040.0341826422. The cubic root of 2504005021 is about 1357.9331749251.

Adding to 2504005021 its reverse (1205004052), we get a palindrome (3709009073).

The spelling of 2504005021 in words is "two billion, five hundred four million, five thousand, twenty-one".