551110005550 has 72 divisors (see below), whose sum is σ = 1110604526136. Its totient is φ = 203372507520.

The previous prime is 551110005527. The next prime is 551110005559. The reversal of 551110005550 is 55500011155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551110005559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15843277 + ... + 15878023.

It is an arithmetic number, because the mean of its divisors is an integer number (15425062863).

Almost surely, 2^551110005550 is an apocalyptic number.

551110005550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551110005550 is an abundant number, since it is smaller than the sum of its proper divisors (559494520586).

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

551110005550 is a wasteful number, since it uses less digits than its factorization.

551110005550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36662 (or 36644 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 28.

The spelling of 551110005550 in words is "five hundred fifty-one billion, one hundred ten million, five thousand, five hundred fifty".