5260394521 has 2 divisors, whose sum is σ = 5260394522. Its totient is φ = 5260394520.

The previous prime is 5260394479. The next prime is 5260394533. The reversal of 5260394521 is 1254930625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2794179600 + 2466214921 = 52860^2 + 49661^2 .

It is a cyclic number.

It is not a de Polignac number, because 5260394521 - 2¹⁵ = 5260361753 is a prime.

It is not a weakly prime, because it can be changed into another prime (5260394021) 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 as a sum of consecutive naturals, namely, 2630197260 + 2630197261.

It is an arithmetic number, because the mean of its divisors is an integer number (2630197261).

Almost surely, 2^5260394521 is an apocalyptic number.

It is an amenable number.

5260394521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5260394521 is an equidigital number, since it uses as much as digits as its factorization.

5260394521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 5260394521 is about 72528.5772713073. The cubic root of 5260394521 is about 1739.1596022011.

The spelling of 5260394521 in words is "five billion, two hundred sixty million, three hundred ninety-four thousand, five hundred twenty-one".