54517855871545 has 32 divisors (see below), whose sum is σ = 73379310359040. Its totient is φ = 38539552896000.

The previous prime is 54517855871543. The next prime is 54517855871551.

54517855871545 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 54517855871545 - 2¹ = 54517855871543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54517855871543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43994860 + ... + 45217069.

It is an arithmetic number, because the mean of its divisors is an integer number (2293103448720).

Almost surely, 2^{54517855871545} is an apocalyptic number.

54517855871545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54517855871545 is a deficient number, since it is larger than the sum of its proper divisors (18861454487495).

54517855871545 is a wasteful number, since it uses less digits than its factorization.

54517855871545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89212257.

The product of its digits is 784000000, while the sum is 70.

The spelling of 54517855871545 in words is "fifty-four trillion, five hundred seventeen billion, eight hundred fifty-five million, eight hundred seventy-one thousand, five hundred forty-five".