505050550055 has 4 divisors (see below), whose sum is σ = 606060660072. Its totient is φ = 404040440040.

The previous prime is 505050550007. The next prime is 505050550129. The reversal of 505050550055 is 550055050505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550055050505 = 5 ⋅110011010101.

It is not a de Polignac number, because 505050550055 - 2⁸ = 505050549799 is a prime.

It is a super-2 number, since 2×505050550055² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505050549997 and 505050550024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50505055001 + ... + 50505055010.

It is an arithmetic number, because the mean of its divisors is an integer number (151515165018).

Almost surely, 2^505050550055 is an apocalyptic number.

505050550055 is a deficient number, since it is larger than the sum of its proper divisors (101010110017).

505050550055 is a wasteful number, since it uses less digits than its factorization.

505050550055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101010110016.

The product of its (nonzero) digits is 78125, while the sum is 35.

The spelling of 505050550055 in words is "five hundred five billion, fifty million, five hundred fifty thousand, fifty-five".