55000055500 has 96 divisors (see below), whose sum is σ = 129806127360. Its totient is φ = 20237702400.

The previous prime is 55000055449. The next prime is 55000055521. The reversal of 55000055500 is 555000055.

55000055500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55000055500² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

55000055500 is a modest number, since divided by 55500 gives 55000 as remainder.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1890061 + ... + 1918939.

It is an arithmetic number, because the mean of its divisors is an integer number (1352147160).

Almost surely, 2^55000055500 is an apocalyptic number.

55000055500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55000055500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64903063680).

55000055500 is an abundant number, since it is smaller than the sum of its proper divisors (74806071860).

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

55000055500 is a wasteful number, since it uses less digits than its factorization.

55000055500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29204 (or 29192 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 25.

Adding to 55000055500 its reverse (555000055), we get a palindrome (55555055555).

The spelling of 55000055500 in words is "fifty-five billion, fifty-five thousand, five hundred".