50520540989 has 2 divisors, whose sum is σ = 50520540990. Its totient is φ = 50520540988.

The previous prime is 50520540977. The next prime is 50520541039. The reversal of 50520540989 is 98904502505.

50520540989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50415068089 + 105472900 = 224533^2 + 10270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50520540989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50520540919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25260270494 + 25260270495.

It is an arithmetic number, because the mean of its divisors is an integer number (25260270495).

Almost surely, 2^50520540989 is an apocalyptic number.

It is an amenable number.

50520540989 is a deficient number, since it is larger than the sum of its proper divisors (1).

50520540989 is an equidigital number, since it uses as much as digits as its factorization.

50520540989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 50520540989 in words is "fifty billion, five hundred twenty million, five hundred forty thousand, nine hundred eighty-nine".