54559130861 has 4 divisors (see below), whose sum is σ = 54561411324. Its totient is φ = 54556850400.

The previous prime is 54559130851. The next prime is 54559130867. The reversal of 54559130861 is 16803195545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43934675236 + 10624455625 = 209606^2 + 103075^2 .

It is a cyclic number.

It is not a de Polignac number, because 54559130861 - 2¹⁰ = 54559129837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54559130867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103960 + ... + 1152321.

It is an arithmetic number, because the mean of its divisors is an integer number (13640352831).

Almost surely, 2^54559130861 is an apocalyptic number.

It is an amenable number.

54559130861 is a deficient number, since it is larger than the sum of its proper divisors (2280463).

54559130861 is a wasteful number, since it uses less digits than its factorization.

54559130861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280462.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 54559130861 in words is "fifty-four billion, five hundred fifty-nine million, one hundred thirty thousand, eight hundred sixty-one".