55555555050 has 120 divisors (see below), whose sum is σ = 154445534496. Its totient is φ = 14806812960.

The previous prime is 55555555031. The next prime is 55555555061. The reversal of 55555555050 is 5055555555.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 55555554987 and 55555555005.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 14606449 + ... + 14610251.

Almost surely, 2^55555555050 is an apocalyptic number.

55555555050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55555555050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77222767248).

55555555050 is an abundant number, since it is smaller than the sum of its proper divisors (98889979446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55555555050 is a wasteful number, since it uses less digits than its factorization.

55555555050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7434 (or 7420 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 55555555050 in words is "fifty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, fifty".