54551815545 has 32 divisors (see below), whose sum is σ = 87857424000. Its totient is φ = 28902956544.

The previous prime is 54551815519. The next prime is 54551815573.

54551815545 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 54551815545 - 2⁸ = 54551815289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54551815494 and 54551815503.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8429571 + ... + 8436039.

It is an arithmetic number, because the mean of its divisors is an integer number (2745544500).

Almost surely, 2^54551815545 is an apocalyptic number.

It is an amenable number.

54551815545 is a deficient number, since it is larger than the sum of its proper divisors (33305608455).

54551815545 is a wasteful number, since it uses less digits than its factorization.

54551815545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10089.

The product of its digits is 2000000, while the sum is 48.

The spelling of 54551815545 in words is "fifty-four billion, five hundred fifty-one million, eight hundred fifteen thousand, five hundred forty-five".