2504843921 has 2 divisors, whose sum is σ = 2504843922. Its totient is φ = 2504843920.

The previous prime is 2504843909. The next prime is 2504844011. The reversal of 2504843921 is 1293484052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2070705025 + 434138896 = 45505^2 + 20836^2 .

It is a cyclic number.

It is not a de Polignac number, because 2504843921 - 2¹⁸ = 2504581777 is a prime.

It is not a weakly prime, because it can be changed into another prime (2504846921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252421960 + 1252421961.

It is an arithmetic number, because the mean of its divisors is an integer number (1252421961).

Almost surely, 2^2504843921 is an apocalyptic number.

It is an amenable number.

2504843921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2504843921 is an equidigital number, since it uses as much as digits as its factorization.

2504843921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 2504843921 is about 50048.4157691330. The cubic root of 2504843921 is about 1358.0848044064.

The spelling of 2504843921 in words is "two billion, five hundred four million, eight hundred forty-three thousand, nine hundred twenty-one".