50545400557 has 2 divisors, whose sum is σ = 50545400558. Its totient is φ = 50545400556.

The previous prime is 50545400537. The next prime is 50545400593. The reversal of 50545400557 is 75500454505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33146207721 + 17399192836 = 182061^2 + 131906^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50545400557 is a prime.

It is a super-5 number, since 5×50545400557⁵ (a number of 55 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50545400537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25272700278 + 25272700279.

It is an arithmetic number, because the mean of its divisors is an integer number (25272700279).

Almost surely, 2^50545400557 is an apocalyptic number.

It is an amenable number.

50545400557 is a deficient number, since it is larger than the sum of its proper divisors (1).

50545400557 is an equidigital number, since it uses as much as digits as its factorization.

50545400557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350000, while the sum is 40.

The spelling of 50545400557 in words is "fifty billion, five hundred forty-five million, four hundred thousand, five hundred fifty-seven".