50051000055 has 32 divisors (see below), whose sum is σ = 91869871104. Its totient is φ = 22793446656.

The previous prime is 50051000053. The next prime is 50051000071. The reversal of 50051000055 is 55000015005.

It is not a de Polignac number, because 50051000055 - 2¹ = 50051000053 is a prime.

It is a super-2 number, since 2×50051000055² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 50050999995 and 50051000040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50051000053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 878614 + ... + 933843.

It is an arithmetic number, because the mean of its divisors is an integer number (2870933472).

Almost surely, 2^50051000055 is an apocalyptic number.

50051000055 is a deficient number, since it is larger than the sum of its proper divisors (41818871049).

50051000055 is a wasteful number, since it uses less digits than its factorization.

50051000055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812735.

The product of its (nonzero) digits is 625, while the sum is 21.

The spelling of 50051000055 in words is "fifty billion, fifty-one million, fifty-five", and thus it is an aban number and an uban number.