55005055550 has 12 divisors (see below), whose sum is σ = 102309403416. Its totient is φ = 22002022200.

The previous prime is 55005055531. The next prime is 55005055571. The reversal of 55005055550 is 5555050055.

It is a super-2 number, since 2×55005055550² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55005055550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 550050506 + ... + 550050605.

It is an arithmetic number, because the mean of its divisors is an integer number (8525783618).

Almost surely, 2^55005055550 is an apocalyptic number.

55005055550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55005055550 is a deficient number, since it is larger than the sum of its proper divisors (47304347866).

55005055550 is a wasteful number, since it uses less digits than its factorization.

55005055550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100101123 (or 1100101118 counting only the distinct ones).

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

It can be divided in two parts, 5500505 and 5550, that added together give a palindrome (5506055).

The spelling of 55005055550 in words is "fifty-five billion, five million, fifty-five thousand, five hundred fifty".