50561005111 has 4 divisors (see below), whose sum is σ = 51061609224. Its totient is φ = 50060401000.

The previous prime is 50561005097. The next prime is 50561005123. The reversal of 50561005111 is 11150016505.

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

It is a cyclic number.

It is not a de Polignac number, because 50561005111 - 2⁷ = 50561004983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50561005511) 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, 250301905 + ... + 250302106.

It is an arithmetic number, because the mean of its divisors is an integer number (12765402306).

Almost surely, 2^50561005111 is an apocalyptic number.

50561005111 is a deficient number, since it is larger than the sum of its proper divisors (500604113).

50561005111 is a wasteful number, since it uses less digits than its factorization.

50561005111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500604112.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 50561005111 in words is "fifty billion, five hundred sixty-one million, five thousand, one hundred eleven".