5271542640 has 480 divisors, whose sum is σ = 22481418240. Its totient is φ = 1111698432.

The previous prime is 5271542629. The next prime is 5271542641. The reversal of 5271542640 is 462451725.

It is a happy number.

5271542640 is a `hidden beast` number, since 5 + 2 + 7 + 1 + 5 + 4 + 2 + 640 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 5271542595 and 5271542604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5271542641) 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 95 ways as a sum of consecutive naturals, for example, 2554249 + ... + 2556311.

It is an arithmetic number, because the mean of its divisors is an integer number (46836288).

Almost surely, 2^5271542640 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 5271542640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11240709120).

5271542640 is an abundant number, since it is smaller than the sum of its proper divisors (17209875600).

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

5271542640 is a wasteful number, since it uses less digits than its factorization.

5271542640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118 (or 2093 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 5271542640 is about 72605.3898825700. The cubic root of 5271542640 is about 1740.3873097388.

The spelling of 5271542640 in words is "five billion, two hundred seventy-one million, five hundred forty-two thousand, six hundred forty".