5581111187 has 2 divisors, whose sum is σ = 5581111188. Its totient is φ = 5581111186.

The previous prime is 5581111177. The next prime is 5581111309. The reversal of 5581111187 is 7811111855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5581111187 - 2¹⁰ = 5581110163 is a prime.

It is a super-2 number, since 2×5581111187² = 62297604163313097938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5581111187.

It is not a weakly prime, because it can be changed into another prime (5581111127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2790555593 + 2790555594.

It is an arithmetic number, because the mean of its divisors is an integer number (2790555594).

Almost surely, 2^5581111187 is an apocalyptic number.

5581111187 is a deficient number, since it is larger than the sum of its proper divisors (1).

5581111187 is an equidigital number, since it uses as much as digits as its factorization.

5581111187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 38.

The square root of 5581111187 is about 74706.8349416571. The cubic root of 5581111187 is about 1773.8091529159.

The spelling of 5581111187 in words is "five billion, five hundred eighty-one million, one hundred eleven thousand, one hundred eighty-seven".