52505020187 has 2 divisors, whose sum is σ = 52505020188. Its totient is φ = 52505020186.

The previous prime is 52505020181. The next prime is 52505020207. The reversal of 52505020187 is 78102050525.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52505020187 is a prime.

It is not a weakly prime, because it can be changed into another prime (52505020181) 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, 26252510093 + 26252510094.

It is an arithmetic number, because the mean of its divisors is an integer number (26252510094).

Almost surely, 2^52505020187 is an apocalyptic number.

52505020187 is a deficient number, since it is larger than the sum of its proper divisors (1).

52505020187 is an equidigital number, since it uses as much as digits as its factorization.

52505020187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 35.

The spelling of 52505020187 in words is "fifty-two billion, five hundred five million, twenty thousand, one hundred eighty-seven".