2521043873 has 2 divisors, whose sum is σ = 2521043874. Its totient is φ = 2521043872.

The previous prime is 2521043801. The next prime is 2521043933. The reversal of 2521043873 is 3783401252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1347844369 + 1173199504 = 36713^2 + 34252^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521043873 - 2¹⁸ = 2520781729 is a prime.

It is not a weakly prime, because it can be changed into another prime (2521046873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260521936 + 1260521937.

It is an arithmetic number, because the mean of its divisors is an integer number (1260521937).

Almost surely, 2^2521043873 is an apocalyptic number.

It is an amenable number.

2521043873 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521043873 is an equidigital number, since it uses as much as digits as its factorization.

2521043873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 2521043873 is about 50209.9977394941. The cubic root of 2521043873 is about 1361.0062969356.

The spelling of 2521043873 in words is "two billion, five hundred twenty-one million, forty-three thousand, eight hundred seventy-three".