55005500500550 has 48 divisors (see below), whose sum is σ = 102421916309952. Its totient is φ = 21978194860800.

The previous prime is 55005500500549. The next prime is 55005500500553. The reversal of 55005500500550 is 5500500550055.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55005500500550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55005500500553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170758640 + ... + 171080460.

It is an arithmetic number, because the mean of its divisors is an integer number (2133789923124).

Almost surely, 2^{55005500500550} is an apocalyptic number.

55005500500550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55005500500550 is a deficient number, since it is larger than the sum of its proper divisors (47416415809402).

55005500500550 is a wasteful number, since it uses less digits than its factorization.

55005500500550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325553 (or 325548 counting only the distinct ones).

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

The spelling of 55005500500550 in words is "fifty-five trillion, five billion, five hundred million, five hundred thousand, five hundred fifty".