5581381171 has 2 divisors, whose sum is σ = 5581381172. Its totient is φ = 5581381170.

The previous prime is 5581381159. The next prime is 5581381189. The reversal of 5581381171 is 1711831855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5581381171 - 2⁹ = 5581380659 is a prime.

It is not a weakly prime, because it can be changed into another prime (5581381121) 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 as a sum of consecutive naturals, namely, 2790690585 + 2790690586.

It is an arithmetic number, because the mean of its divisors is an integer number (2790690586).

Almost surely, 2^5581381171 is an apocalyptic number.

5581381171 is a deficient number, since it is larger than the sum of its proper divisors (1).

5581381171 is an equidigital number, since it uses as much as digits as its factorization.

5581381171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 40.

The square root of 5581381171 is about 74708.6418762917. The cubic root of 5581381171 is about 1773.8377548885.

The spelling of 5581381171 in words is "five billion, five hundred eighty-one million, three hundred eighty-one thousand, one hundred seventy-one".