5132543221 has 16 divisors (see below), whose sum is σ = 5857432560. Its totient is φ = 4462778880.

The previous prime is 5132543197. The next prime is 5132543237. The reversal of 5132543221 is 1223452315.

It can be written as a sum of positive squares in 8 ways, for example, as 628254225 + 4504288996 = 25065^2 + 67114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5132543221 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 5132543221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5132543261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150570 + ... + 181483.

It is an arithmetic number, because the mean of its divisors is an integer number (366089535).

Almost surely, 2^5132543221 is an apocalyptic number.

It is an amenable number.

5132543221 is a deficient number, since it is larger than the sum of its proper divisors (724889339).

5132543221 is a wasteful number, since it uses less digits than its factorization.

5132543221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332136.

The product of its digits is 7200, while the sum is 28.

The square root of 5132543221 is about 71641.7700856142. The cubic root of 5132543221 is about 1724.9540808052.

Adding to 5132543221 its reverse (1223452315), we get a palindrome (6355995536).

The spelling of 5132543221 in words is "five billion, one hundred thirty-two million, five hundred forty-three thousand, two hundred twenty-one".