5243771520 has 640 divisors, whose sum is σ = 20900436480. Its totient is φ = 1244160000.

The previous prime is 5243771501. The next prime is 5243771521. The reversal of 5243771520 is 251773425.

It is a tau number, because it is divible by the number of its divisors (640).

It is a super-2 number, since 2×5243771520² = 54994279507926220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (5243771521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 20891395 + ... + 20891645.

It is an arithmetic number, because the mean of its divisors is an integer number (32656932).

Almost surely, 2^5243771520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5243771520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10450218240).

5243771520 is an abundant number, since it is smaller than the sum of its proper divisors (15656664960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5243771520 is a wasteful number, since it uses less digits than its factorization.

5243771520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 5243771520 is about 72413.8903802302. The cubic root of 5243771520 is about 1737.3257373665.

The spelling of 5243771520 in words is "five billion, two hundred forty-three million, seven hundred seventy-one thousand, five hundred twenty".