2521072789 has 2 divisors, whose sum is σ = 2521072790. Its totient is φ = 2521072788.

The previous prime is 2521072769. The next prime is 2521072819. The reversal of 2521072789 is 9872701252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2328834564 + 192238225 = 48258^2 + 13865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521072789 - 2⁷ = 2521072661 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2521072759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260536394 + 1260536395.

It is an arithmetic number, because the mean of its divisors is an integer number (1260536395).

Almost surely, 2^2521072789 is an apocalyptic number.

It is an amenable number.

2521072789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521072789 is an equidigital number, since it uses as much as digits as its factorization.

2521072789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 2521072789 is about 50210.2856892888. The cubic root of 2521072789 is about 1361.0115004293.

The spelling of 2521072789 in words is "two billion, five hundred twenty-one million, seventy-two thousand, seven hundred eighty-nine".