55155011171 has 16 divisors (see below), whose sum is σ = 60428840640. Its totient is φ = 50030075520.

The previous prime is 55155011147. The next prime is 55155011207. The reversal of 55155011171 is 17111055155.

It is a cyclic number.

It is not a de Polignac number, because 55155011171 - 2¹⁰ = 55155010147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55155011101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815186 + ... + 880248.

It is an arithmetic number, because the mean of its divisors is an integer number (3776802540).

Almost surely, 2^55155011171 is an apocalyptic number.

55155011171 is a deficient number, since it is larger than the sum of its proper divisors (5273829469).

55155011171 is a wasteful number, since it uses less digits than its factorization.

55155011171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66206.

The product of its (nonzero) digits is 4375, while the sum is 32.

The spelling of 55155011171 in words is "fifty-five billion, one hundred fifty-five million, eleven thousand, one hundred seventy-one".