53555505187 has 2 divisors, whose sum is σ = 53555505188. Its totient is φ = 53555505186.

The previous prime is 53555505167. The next prime is 53555505191. The reversal of 53555505187 is 78150555535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53555505187 - 2¹¹ = 53555503139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53555505187.

It is not a weakly prime, because it can be changed into another prime (53555505167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26777752593 + 26777752594.

It is an arithmetic number, because the mean of its divisors is an integer number (26777752594).

Almost surely, 2^53555505187 is an apocalyptic number.

53555505187 is a deficient number, since it is larger than the sum of its proper divisors (1).

53555505187 is an equidigital number, since it uses as much as digits as its factorization.

53555505187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2625000, while the sum is 49.

The spelling of 53555505187 in words is "fifty-three billion, five hundred fifty-five million, five hundred five thousand, one hundred eighty-seven".