55555550055 has 16 divisors (see below), whose sum is σ = 98765422560. Its totient is φ = 29629626624.

The previous prime is 55555550053. The next prime is 55555550101. The reversal of 55555550055 is 55005555555.

It is not a de Polignac number, because 55555550055 - 2¹ = 55555550053 is a prime.

It is a super-2 number, since 2×55555550055² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555550053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205761162 + ... + 205761431.

It is an arithmetic number, because the mean of its divisors is an integer number (6172838910).

Almost surely, 2^55555550055 is an apocalyptic number.

55555550055 is a deficient number, since it is larger than the sum of its proper divisors (43209872505).

55555550055 is a wasteful number, since it uses less digits than its factorization.

55555550055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411522607 (or 411522601 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

It can be divided in two parts, 555555500 and 55, that added together give a palindrome (555555555).

The spelling of 55555550055 in words is "fifty-five billion, five hundred fifty-five million, five hundred fifty thousand, fifty-five".