55105450155 has 48 divisors (see below), whose sum is σ = 109180431360. Its totient is φ = 25186641984.

The previous prime is 55105450117. The next prime is 55105450159.

55105450155 is a `hidden beast` number, since 5 + 51 + 0 + 5 + 450 + 155 = 666.

55105450155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55105450155 - 2⁶ = 55105450091 is a prime.

It is a super-2 number, since 2×55105450155² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55105450159) 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 47 ways as a sum of consecutive naturals, for example, 2369514 + ... + 2392656.

It is an arithmetic number, because the mean of its divisors is an integer number (2274592320).

Almost surely, 2^55105450155 is an apocalyptic number.

55105450155 is a deficient number, since it is larger than the sum of its proper divisors (54074981205).

55105450155 is a wasteful number, since it uses less digits than its factorization.

55105450155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30720 (or 30717 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 36.

The spelling of 55105450155 in words is "fifty-five billion, one hundred five million, four hundred fifty thousand, one hundred fifty-five".