5131521543 has 16 divisors (see below), whose sum is σ = 7065676800. Its totient is φ = 3309282240.

The previous prime is 5131521541. The next prime is 5131521547. The reversal of 5131521543 is 3451251315.

It is not a de Polignac number, because 5131521543 - 2¹ = 5131521541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5131521543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131521541) 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 in 15 ways as a sum of consecutive naturals, for example, 243688 + ... + 263906.

It is an arithmetic number, because the mean of its divisors is an integer number (441604800).

Almost surely, 2^5131521543 is an apocalyptic number.

5131521543 is a deficient number, since it is larger than the sum of its proper divisors (1934155257).

5131521543 is a wasteful number, since it uses less digits than its factorization.

5131521543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22982.

The product of its digits is 9000, while the sum is 30.

The square root of 5131521543 is about 71634.6392676057. The cubic root of 5131521543 is about 1724.8396174350.

Adding to 5131521543 its reverse (3451251315), we get a palindrome (8582772858).

The spelling of 5131521543 in words is "five billion, one hundred thirty-one million, five hundred twenty-one thousand, five hundred forty-three".