5250531531521 has 2 divisors, whose sum is σ = 5250531531522. Its totient is φ = 5250531531520.

The previous prime is 5250531531503. The next prime is 5250531531577. The reversal of 5250531531521 is 1251351350525.

5250531531521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2742869257921 + 2507662273600 = 1656161^2 + 1583560^2 .

It is a cyclic number.

It is not a de Polignac number, because 5250531531521 - 2¹⁸ = 5250531269377 is a prime.

It is a super-3 number, since 3×5250531531521³ (a number of 39 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (5250531537521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2625265765760 + 2625265765761.

It is an arithmetic number, because the mean of its divisors is an integer number (2625265765761).

Almost surely, 2^{5250531531521} is an apocalyptic number.

It is an amenable number.

5250531531521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5250531531521 is an equidigital number, since it uses as much as digits as its factorization.

5250531531521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112500, while the sum is 38.

The spelling of 5250531531521 in words is "five trillion, two hundred fifty billion, five hundred thirty-one million, five hundred thirty-one thousand, five hundred twenty-one".