5218120571 has 2 divisors, whose sum is σ = 5218120572. Its totient is φ = 5218120570.

The previous prime is 5218120559. The next prime is 5218120591. The reversal of 5218120571 is 1750218125.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5218120571 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (5218120591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2609060285 + 2609060286.

It is an arithmetic number, because the mean of its divisors is an integer number (2609060286).

Almost surely, 2^5218120571 is an apocalyptic number.

5218120571 is a deficient number, since it is larger than the sum of its proper divisors (1).

5218120571 is an equidigital number, since it uses as much as digits as its factorization.

5218120571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 5218120571 is about 72236.5597948850. The cubic root of 5218120571 is about 1734.4882811277.

Adding to 5218120571 its reverse (1750218125), we get a palindrome (6968338696).

The spelling of 5218120571 in words is "five billion, two hundred eighteen million, one hundred twenty thousand, five hundred seventy-one".