50005555557 has 16 divisors (see below), whose sum is σ = 67084381632. Its totient is φ = 33132395520.

The previous prime is 50005555549. The next prime is 50005555637. The reversal of 50005555557 is 75555550005.

It is not a de Polignac number, because 50005555557 - 2³ = 50005555549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50005555507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329307 + ... + 456567.

It is an arithmetic number, because the mean of its divisors is an integer number (4192773852).

Almost surely, 2^50005555557 is an apocalyptic number.

It is an amenable number.

50005555557 is a deficient number, since it is larger than the sum of its proper divisors (17078826075).

50005555557 is a wasteful number, since it uses less digits than its factorization.

50005555557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128068.

The product of its (nonzero) digits is 546875, while the sum is 42.

The spelling of 50005555557 in words is "fifty billion, five million, five hundred fifty-five thousand, five hundred fifty-seven".