50505050551 has 4 divisors (see below), whose sum is σ = 50505567112. Its totient is φ = 50504533992.

The previous prime is 50505050429. The next prime is 50505050567. The reversal of 50505050551 is 15505050505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 50505050551 - 2¹⁹ = 50504526263 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 (50505050851) 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, 61800 + ... + 323773.

It is an arithmetic number, because the mean of its divisors is an integer number (12626391778).

Almost surely, 2^50505050551 is an apocalyptic number.

50505050551 is a deficient number, since it is larger than the sum of its proper divisors (516561).

50505050551 is a wasteful number, since it uses less digits than its factorization.

50505050551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516560.

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 50505050551 in words is "fifty billion, five hundred five million, fifty thousand, five hundred fifty-one".