50515206557 has 2 divisors, whose sum is σ = 50515206558. Its totient is φ = 50515206556.

The previous prime is 50515206503. The next prime is 50515206571. The reversal of 50515206557 is 75560251505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43903239961 + 6611966596 = 209531^2 + 81314^2 .

It is a cyclic number.

It is not a de Polignac number, because 50515206557 - 2²⁸ = 50246771101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50515205557) 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, 25257603278 + 25257603279.

It is an arithmetic number, because the mean of its divisors is an integer number (25257603279).

Almost surely, 2^50515206557 is an apocalyptic number.

It is an amenable number.

50515206557 is a deficient number, since it is larger than the sum of its proper divisors (1).

50515206557 is an equidigital number, since it uses as much as digits as its factorization.

50515206557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262500, while the sum is 41.

The spelling of 50515206557 in words is "fifty billion, five hundred fifteen million, two hundred six thousand, five hundred fifty-seven".