50546555561 has 2 divisors, whose sum is σ = 50546555562. Its totient is φ = 50546555560.

The previous prime is 50546555557. The next prime is 50546555629. The reversal of 50546555561 is 16555564505.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33839442025 + 16707113536 = 183955^2 + 129256^2 .

It is a cyclic number.

It is not a de Polignac number, because 50546555561 - 2² = 50546555557 is a prime.

It is not a weakly prime, because it can be changed into another prime (50546555261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25273277780 + 25273277781.

It is an arithmetic number, because the mean of its divisors is an integer number (25273277781).

Almost surely, 2^50546555561 is an apocalyptic number.

It is an amenable number.

50546555561 is a deficient number, since it is larger than the sum of its proper divisors (1).

50546555561 is an equidigital number, since it uses as much as digits as its factorization.

50546555561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250000, while the sum is 47.

The spelling of 50546555561 in words is "fifty billion, five hundred forty-six million, five hundred fifty-five thousand, five hundred sixty-one".