5256515124 has 144 divisors (see below), whose sum is σ = 16597840896. Its totient is φ = 1367884800.

The previous prime is 5256515113. The next prime is 5256515137. The reversal of 5256515124 is 4215156525.

5256515124 is a `hidden beast` number, since 525 + 6 + 5 + 1 + 5 + 124 = 666.

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

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 113014 + ... + 152594.

It is an arithmetic number, because the mean of its divisors is an integer number (115262784).

Almost surely, 2^5256515124 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 5256515124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8298920448).

5256515124 is an abundant number, since it is smaller than the sum of its proper divisors (11341325772).

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

5256515124 is a wasteful number, since it uses less digits than its factorization.

5256515124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39646 (or 39641 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 5256515124 is about 72501.8284183234. The cubic root of 5256515124 is about 1738.7319695242.

The spelling of 5256515124 in words is "five billion, two hundred fifty-six million, five hundred fifteen thousand, one hundred twenty-four".