50550042155 has 4 divisors (see below), whose sum is σ = 60660050592. Its totient is φ = 40440033720.

The previous prime is 50550042149. The next prime is 50550042161. The reversal of 50550042155 is 55124005505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55124005505 = 5 ⋅11024801101.

It is an interprime number because it is at equal distance from previous prime (50550042149) and next prime (50550042161).

It is not a de Polignac number, because 50550042155 - 2¹⁰ = 50550041131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5055004211 + ... + 5055004220.

It is an arithmetic number, because the mean of its divisors is an integer number (15165012648).

Almost surely, 2^50550042155 is an apocalyptic number.

50550042155 is a deficient number, since it is larger than the sum of its proper divisors (10110008437).

50550042155 is a wasteful number, since it uses less digits than its factorization.

50550042155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110008436.

The product of its (nonzero) digits is 25000, while the sum is 32.

The spelling of 50550042155 in words is "fifty billion, five hundred fifty million, forty-two thousand, one hundred fifty-five".