5143430521 has 4 divisors (see below), whose sum is σ = 5144417892. Its totient is φ = 5142443152.

The previous prime is 5143430471. The next prime is 5143430543. The reversal of 5143430521 is 1250343415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3224990521 + 1918440000 = 56789^2 + 43800^2 .

It is a cyclic number.

It is not a de Polignac number, because 5143430521 - 2¹³ = 5143422329 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 5143430521.

It is not an unprimeable number, because it can be changed into a prime (5143430581) 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, 485830 + ... + 496303.

It is an arithmetic number, because the mean of its divisors is an integer number (1286104473).

Almost surely, 2^5143430521 is an apocalyptic number.

It is an amenable number.

5143430521 is a deficient number, since it is larger than the sum of its proper divisors (987371).

5143430521 is an equidigital number, since it uses as much as digits as its factorization.

5143430521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987370.

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

The square root of 5143430521 is about 71717.7141367459. The cubic root of 5143430521 is about 1726.1728936772.

Adding to 5143430521 its reverse (1250343415), we get a palindrome (6393773936).

The spelling of 5143430521 in words is "five billion, one hundred forty-three million, four hundred thirty thousand, five hundred twenty-one".