55055606101155 has 160 divisors (see below), whose sum is σ = 110316677137920. Its totient is φ = 26037686545920.

The previous prime is 55055606101109. The next prime is 55055606101157. The reversal of 55055606101155 is 55110160655055.

It is not a de Polignac number, because 55055606101155 - 2¹⁵ = 55055606068387 is a prime.

It is a super-2 number, since 2×55055606101155² (a number of 28 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 55055606101155.

It is not an unprimeable number, because it can be changed into a prime (55055606101157) by changing a digit.

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 159 ways as a sum of consecutive naturals, for example, 142139391 + ... + 142526199.

It is an arithmetic number, because the mean of its divisors is an integer number (689479232112).

Almost surely, 2^{55055606101155} is an apocalyptic number.

55055606101155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55055606101155 is an abundant number, since it is smaller than the sum of its proper divisors (55261071036765).

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

55055606101155 is a wasteful number, since it uses less digits than its factorization.

55055606101155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387623 (or 387614 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 45.

The spelling of 55055606101155 in words is "fifty-five trillion, fifty-five billion, six hundred six million, one hundred one thousand, one hundred fifty-five".