5124431521 has 4 divisors (see below), whose sum is σ = 5590288944. Its totient is φ = 4658574100.

The previous prime is 5124431503. The next prime is 5124431549. The reversal of 5124431521 is 1251344215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5124431521 - 2²¹ = 5122334369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5124431521.

It is not an unprimeable number, because it can be changed into a prime (5124431591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232928695 + ... + 232928716.

It is an arithmetic number, because the mean of its divisors is an integer number (1397572236).

Almost surely, 2^5124431521 is an apocalyptic number.

It is an amenable number.

5124431521 is a deficient number, since it is larger than the sum of its proper divisors (465857423).

5124431521 is a wasteful number, since it uses less digits than its factorization.

5124431521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465857422.

The product of its digits is 4800, while the sum is 28.

The square root of 5124431521 is about 71585.1347767118. The cubic root of 5124431521 is about 1724.0448702216.

Adding to 5124431521 its reverse (1251344215), we get a palindrome (6375775736).

It can be divided in two parts, 5124 and 431521, that added together give a triangular number (436645 = T₉₃₄).

The spelling of 5124431521 in words is "five billion, one hundred twenty-four million, four hundred thirty-one thousand, five hundred twenty-one".