5110555991 has 2 divisors, whose sum is σ = 5110555992. Its totient is φ = 5110555990.

The previous prime is 5110555979. The next prime is 5110555993. The reversal of 5110555991 is 1995550115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5110555991 - 2²⁶ = 5043447127 is a prime.

It is a super-2 number, since 2×5110555991² = 52235565074291984162, which contains 22 as substring.

Together with 5110555993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5110555993) 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, 2555277995 + 2555277996.

It is an arithmetic number, because the mean of its divisors is an integer number (2555277996).

Almost surely, 2^5110555991 is an apocalyptic number.

5110555991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5110555991 is an equidigital number, since it uses as much as digits as its factorization.

5110555991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50625, while the sum is 41.

The square root of 5110555991 is about 71488.1528017055. The cubic root of 5110555991 is about 1722.4873862251.

The spelling of 5110555991 in words is "five billion, one hundred ten million, five hundred fifty-five thousand, nine hundred ninety-one".