5243215361 has 4 divisors (see below), whose sum is σ = 5551639812. Its totient is φ = 4934790912.

The previous prime is 5243215303. The next prime is 5243215379. The reversal of 5243215361 is 1635123425.

It is a happy number.

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 3432202225 + 1811013136 = 58585^2 + 42556^2 .

It is a cyclic number.

It is not a de Polignac number, because 5243215361 - 2¹⁰ = 5243214337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5243215381) 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, 154212200 + ... + 154212233.

It is an arithmetic number, because the mean of its divisors is an integer number (1387909953).

Almost surely, 2^5243215361 is an apocalyptic number.

It is an amenable number.

5243215361 is a deficient number, since it is larger than the sum of its proper divisors (308424451).

5243215361 is a wasteful number, since it uses less digits than its factorization.

5243215361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308424450.

The product of its digits is 21600, while the sum is 32.

The square root of 5243215361 is about 72410.0501380851. The cubic root of 5243215361 is about 1737.2643144318.

Adding to 5243215361 its reverse (1635123425), we get a palindrome (6878338786).

The spelling of 5243215361 in words is "five billion, two hundred forty-three million, two hundred fifteen thousand, three hundred sixty-one".