50051055561 has 8 divisors (see below), whose sum is σ = 71868182400. Its totient is φ = 30800649552.

The previous prime is 50051055559. The next prime is 50051055569. The reversal of 50051055561 is 16555015005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50051055561 - 2¹ = 50051055559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50051055569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641680161 + ... + 641680238.

It is an arithmetic number, because the mean of its divisors is an integer number (8983522800).

Almost surely, 2^50051055561 is an apocalyptic number.

It is an amenable number.

50051055561 is a deficient number, since it is larger than the sum of its proper divisors (21817126839).

50051055561 is a wasteful number, since it uses less digits than its factorization.

50051055561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283360415.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 50051055561 in words is "fifty billion, fifty-one million, fifty-five thousand, five hundred sixty-one".