5247771840 has 224 divisors, whose sum is σ = 18908328960. Its totient is φ = 1369525248.

The previous prime is 5247771829. The next prime is 5247771847. The reversal of 5247771840 is 481777425.

5247771840 is a `hidden beast` number, since 524 + 7 + 77 + 18 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (5247771847) 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 31 ways as a sum of consecutive naturals, for example, 399619 + ... + 412541.

Almost surely, 2^5247771840 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 5247771840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9454164480).

5247771840 is an abundant number, since it is smaller than the sum of its proper divisors (13660557120).

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

5247771840 is a wasteful number, since it uses less digits than its factorization.

5247771840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12996 (or 12980 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The square root of 5247771840 is about 72441.5063344213. The cubic root of 5247771840 is about 1737.7674100783.

The spelling of 5247771840 in words is "five billion, two hundred forty-seven million, seven hundred seventy-one thousand, eight hundred forty".