5132531521 has 12 divisors (see below), whose sum is σ = 5648833020. Its totient is φ = 4660044480.

The previous prime is 5132531497. The next prime is 5132531533. The reversal of 5132531521 is 1251352315.

5132531521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 3051347121 + 2081184400 = 55239^2 + 45620^2 .

It is not a de Polignac number, because 5132531521 - 2¹⁹ = 5132007233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5132531521.

It is not an unprimeable number, because it can be changed into a prime (5132531561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238626 + ... + 259243.

It is an arithmetic number, because the mean of its divisors is an integer number (470736085).

Almost surely, 2^5132531521 is an apocalyptic number.

It is an amenable number.

5132531521 is a deficient number, since it is larger than the sum of its proper divisors (516301499).

5132531521 is a wasteful number, since it uses less digits than its factorization.

5132531521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497956 (or 497943 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 5132531521 is about 71641.6884292937. The cubic root of 5132531521 is about 1724.9527700854.

Adding to 5132531521 its reverse (1251352315), we get a palindrome (6383883836).

The spelling of 5132531521 in words is "five billion, one hundred thirty-two million, five hundred thirty-one thousand, five hundred twenty-one".