55500505050 has 96 divisors (see below), whose sum is σ = 141928041024. Its totient is φ = 14342400000.

The previous prime is 55500505037. The next prime is 55500505079. The reversal of 55500505050 is 5050500555.

It is a Harshad number since it is a multiple of its sum of digits (30).

55500505050 is a modest number, since divided by 505050 gives 55500 as remainder.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55500504999 and 55500505017.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1373130 + ... + 1412970.

It is an arithmetic number, because the mean of its divisors is an integer number (1478417094).

Almost surely, 2^55500505050 is an apocalyptic number.

55500505050 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 55500505050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70964020512).

55500505050 is an abundant number, since it is smaller than the sum of its proper divisors (86427535974).

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

55500505050 is a wasteful number, since it uses less digits than its factorization.

55500505050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40144 (or 40139 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 30.

The spelling of 55500505050 in words is "fifty-five billion, five hundred million, five hundred five thousand, fifty".