5217543871 has 2 divisors, whose sum is σ = 5217543872. Its totient is φ = 5217543870.

The previous prime is 5217543869. The next prime is 5217543883. The reversal of 5217543871 is 1783457125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5217543871 - 2¹ = 5217543869 is a prime.

Together with 5217543869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5217541871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2608771935 + 2608771936.

It is an arithmetic number, because the mean of its divisors is an integer number (2608771936).

Almost surely, 2^5217543871 is an apocalyptic number.

5217543871 is a deficient number, since it is larger than the sum of its proper divisors (1).

5217543871 is an equidigital number, since it uses as much as digits as its factorization.

5217543871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 43.

The square root of 5217543871 is about 72232.5679385691. The cubic root of 5217543871 is about 1734.4243809660.

It can be divided in two parts, 521754 and 3871, that added together give a square (525625 = 725²).

The spelling of 5217543871 in words is "five billion, two hundred seventeen million, five hundred forty-three thousand, eight hundred seventy-one".