50515406251 has 2 divisors, whose sum is σ = 50515406252. Its totient is φ = 50515406250.

The previous prime is 50515406231. The next prime is 50515406309. The reversal of 50515406251 is 15260451505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50515406251 - 2²⁹ = 49978535339 is a prime.

It is not a weakly prime, because it can be changed into another prime (50515406231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25257703125 + 25257703126.

It is an arithmetic number, because the mean of its divisors is an integer number (25257703126).

Almost surely, 2^50515406251 is an apocalyptic number.

50515406251 is a deficient number, since it is larger than the sum of its proper divisors (1).

50515406251 is an equidigital number, since it uses as much as digits as its factorization.

50515406251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 50515406251 its reverse (15260451505), we get a palindrome (65775857756).

The spelling of 50515406251 in words is "fifty billion, five hundred fifteen million, four hundred six thousand, two hundred fifty-one".