2504636621 has 2 divisors, whose sum is σ = 2504636622. Its totient is φ = 2504636620.

The previous prime is 2504636611. The next prime is 2504636623. The reversal of 2504636621 is 1266364052.

It is a happy number.

2504636621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1947015625 + 557620996 = 44125^2 + 23614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2504636621 is a prime.

Together with 2504636623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2504636623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252318310 + 1252318311.

It is an arithmetic number, because the mean of its divisors is an integer number (1252318311).

Almost surely, 2^2504636621 is an apocalyptic number.

It is an amenable number.

2504636621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2504636621 is an equidigital number, since it uses as much as digits as its factorization.

2504636621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2504636621 is about 50046.3447316585. The cubic root of 2504636621 is about 1358.0473384996.

The spelling of 2504636621 in words is "two billion, five hundred four million, six hundred thirty-six thousand, six hundred twenty-one".