54517757191 has 2 divisors, whose sum is σ = 54517757192. Its totient is φ = 54517757190.

The previous prime is 54517757167. The next prime is 54517757243. The reversal of 54517757191 is 19175771545.

It is an a-pointer prime, because the next prime (54517757243) can be obtained adding 54517757191 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54517757191 - 2⁵ = 54517757159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54517707191) 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, 27258878595 + 27258878596.

It is an arithmetic number, because the mean of its divisors is an integer number (27258878596).

Almost surely, 2^54517757191 is an apocalyptic number.

54517757191 is a deficient number, since it is larger than the sum of its proper divisors (1).

54517757191 is an equidigital number, since it uses as much as digits as its factorization.

54517757191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1543500, while the sum is 52.

The spelling of 54517757191 in words is "fifty-four billion, five hundred seventeen million, seven hundred fifty-seven thousand, one hundred ninety-one".