50055555551 has 4 divisors (see below), whose sum is σ = 50057102112. Its totient is φ = 50054008992.

The previous prime is 50055555503. The next prime is 50055555559. The reversal of 50055555551 is 15555555005.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50055555551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50055555499 and 50055555508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50055555559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723671 + ... + 789816.

It is an arithmetic number, because the mean of its divisors is an integer number (12514275528).

Almost surely, 2^50055555551 is an apocalyptic number.

50055555551 is a deficient number, since it is larger than the sum of its proper divisors (1546561).

50055555551 is a wasteful number, since it uses less digits than its factorization.

50055555551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546560.

The product of its (nonzero) digits is 390625, while the sum is 41.

The spelling of 50055555551 in words is "fifty billion, fifty-five million, five hundred fifty-five thousand, five hundred fifty-one".