5255778528 has 768 divisors, whose sum is σ = 21134131200. Its totient is φ = 1226741760.

The previous prime is 5255778527. The next prime is 5255778581. The reversal of 5255778528 is 8258775525.

5255778528 is a `hidden beast` number, since 5 + 2 + 557 + 7 + 85 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5255778527) 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 127 ways as a sum of consecutive naturals, for example, 51026925 + ... + 51027027.

It is an arithmetic number, because the mean of its divisors is an integer number (27518400).

Almost surely, 2^5255778528 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 5255778528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10567065600).

5255778528 is an abundant number, since it is smaller than the sum of its proper divisors (15878352672).

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

5255778528 is a wasteful number, since it uses less digits than its factorization.

5255778528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 198 counting only the distinct ones).

The product of its digits is 7840000, while the sum is 54.

The square root of 5255778528 is about 72496.7483960488. The cubic root of 5255778528 is about 1738.6507495009.

The spelling of 5255778528 in words is "five billion, two hundred fifty-five million, seven hundred seventy-eight thousand, five hundred twenty-eight".