5271756138 has 96 divisors (see below), whose sum is σ = 12815397504. Its totient is φ = 1552320000.

The previous prime is 5271756121. The next prime is 5271756199. The reversal of 5271756138 is 8316571725.

It is a happy number.

5271756138 is a `hidden beast` number, since 5 + 27 + 1 + 7 + 5 + 613 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 5271756093 and 5271756102.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2280003 + ... + 2282313.

It is an arithmetic number, because the mean of its divisors is an integer number (133493724).

Almost surely, 2^5271756138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5271756138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6407698752).

5271756138 is an abundant number, since it is smaller than the sum of its proper divisors (7543641366).

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

5271756138 is a wasteful number, since it uses less digits than its factorization.

5271756138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652 (or 2649 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 5271756138 is about 72606.8601304312. The cubic root of 5271756138 is about 1740.4108047079.

The spelling of 5271756138 in words is "five billion, two hundred seventy-one million, seven hundred fifty-six thousand, one hundred thirty-eight".