50531565313 has 2 divisors, whose sum is σ = 50531565314. Its totient is φ = 50531565312.

The previous prime is 50531565269. The next prime is 50531565347. The reversal of 50531565313 is 31356513505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42426524529 + 8105040784 = 205977^2 + 90028^2 .

It is a cyclic number.

It is not a de Polignac number, because 50531565313 - 2⁹ = 50531564801 is a prime.

It is not a weakly prime, because it can be changed into another prime (50531565013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25265782656 + 25265782657.

It is an arithmetic number, because the mean of its divisors is an integer number (25265782657).

Almost surely, 2^50531565313 is an apocalyptic number.

It is an amenable number.

50531565313 is a deficient number, since it is larger than the sum of its proper divisors (1).

50531565313 is an equidigital number, since it uses as much as digits as its factorization.

50531565313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 101250, while the sum is 37.

The spelling of 50531565313 in words is "fifty billion, five hundred thirty-one million, five hundred sixty-five thousand, three hundred thirteen".