55055550055 has 32 divisors (see below), whose sum is σ = 72296114688. Its totient is φ = 39916540800.

The previous prime is 55055550049. The next prime is 55055550059. The reversal of 55055550055 is 55005555055.

It is not a de Polignac number, because 55055550055 - 2²¹ = 55053452903 is a prime.

It is a super-2 number, since 2×55055550055² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055550059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38047342 + ... + 38048788.

It is an arithmetic number, because the mean of its divisors is an integer number (2259253584).

Almost surely, 2^55055550055 is an apocalyptic number.

55055550055 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55055550055 is a deficient number, since it is larger than the sum of its proper divisors (17240564633).

55055550055 is a wasteful number, since it uses less digits than its factorization.

55055550055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127.

The product of its (nonzero) digits is 390625, while the sum is 40.

Subtracting from 55055550055 its reverse (55005555055), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 55055550055 in words is "fifty-five billion, fifty-five million, five hundred fifty thousand, fifty-five".