5256572820 has 24 divisors (see below), whose sum is σ = 14718404064. Its totient is φ = 1401752736.

The previous prime is 5256572801. The next prime is 5256572821. The reversal of 5256572820 is 282756525.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5256572821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43804714 + ... + 43804833.

It is an arithmetic number, because the mean of its divisors is an integer number (613266836).

Almost surely, 2^5256572820 is an apocalyptic number.

It is an amenable number.

5256572820 is an abundant number, since it is smaller than the sum of its proper divisors (9461831244).

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

5256572820 is a wasteful number, since it uses less digits than its factorization.

5256572820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87609559 (or 87609557 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

The square root of 5256572820 is about 72502.2263106451. The cubic root of 5256572820 is about 1738.7383309956.

The spelling of 5256572820 in words is "five billion, two hundred fifty-six million, five hundred seventy-two thousand, eight hundred twenty".