55530775550 has 48 divisors (see below), whose sum is σ = 104152677552. Its totient is φ = 22026451200.

The previous prime is 55530775549. The next prime is 55530775583. The reversal of 55530775550 is 5557703555.

It is a junction number, because it is equal to n+sod(n) for n = 55530775495 and 55530775504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12921002 + ... + 12925298.

It is an arithmetic number, because the mean of its divisors is an integer number (2169847449).

Almost surely, 2^55530775550 is an apocalyptic number.

55530775550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55530775550 is a deficient number, since it is larger than the sum of its proper divisors (48621902002).

55530775550 is a wasteful number, since it uses less digits than its factorization.

55530775550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6413 (or 6408 counting only the distinct ones).

The product of its (nonzero) digits is 2296875, while the sum is 47.

The spelling of 55530775550 in words is "fifty-five billion, five hundred thirty million, seven hundred seventy-five thousand, five hundred fifty".