54155523555 has 24 divisors (see below), whose sum is σ = 107279513952. Its totient is φ = 24756810624.

The previous prime is 54155523529. The next prime is 54155523557. The reversal of 54155523555 is 55532555145.

54155523555 is a `hidden beast` number, since 5 + 4 + 15 + 552 + 35 + 55 = 666.

It is not a de Polignac number, because 54155523555 - 2²⁵ = 54121969123 is a prime.

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 54155523555.

It is not an unprimeable number, because it can be changed into a prime (54155523557) 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 23 ways as a sum of consecutive naturals, for example, 85960834 + ... + 85961463.

It is an arithmetic number, because the mean of its divisors is an integer number (4469979748).

Almost surely, 2^54155523555 is an apocalyptic number.

54155523555 is a deficient number, since it is larger than the sum of its proper divisors (53123990397).

54155523555 is a wasteful number, since it uses less digits than its factorization.

54155523555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171922315 (or 171922312 counting only the distinct ones).

The product of its digits is 1875000, while the sum is 45.

The spelling of 54155523555 in words is "fifty-four billion, one hundred fifty-five million, five hundred twenty-three thousand, five hundred fifty-five".