5242543251 has 16 divisors (see below), whose sum is σ = 8026861440.
Its totient is φ = 3010072320.
The previous prime is 5242543199. The next prime is 5242543261. The reversal of 5242543251 is 1523452425.
It is a happy number.
It is not a de Polignac number, because 5242543251 - 27 = 5242543123 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (33).
It is not an unprimeable number, because it can be changed into a prime (5242543261) 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, 4180030 + ... + 4181283.
It is an arithmetic number, because the mean of its divisors is an integer number (501678840).
Almost surely, 25242543251 is an apocalyptic number.
5242543251 is a deficient number, since it is larger than the sum of its proper divisors (2784318189).
5242543251 is a wasteful number, since it uses less digits than its factorization.
5242543251 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8361346.
The product of its digits is 48000, while the sum is 33.
The square root of 5242543251 is about 72405.4089899367.
The cubic root of 5242543251 is about 1737.1900799190.
Adding to 5242543251 its reverse (1523452425), we get a palindrome (6765995676).
The spelling of 5242543251 in words is "five billion, two hundred forty-two million, five hundred forty-three thousand, two hundred fifty-one".