54544565521601 has 4 divisors (see below), whose sum is σ = 54544644165252. Its totient is φ = 54544486877952.

The previous prime is 54544565521571. The next prime is 54544565521669. The reversal of 54544565521601 is 10612556544545.

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 31600992418576 + 22943573103025 = 5621476^2 + 4789945^2 .

It is a cyclic number.

It is not a de Polignac number, because 54544565521601 - 2¹⁴ = 54544565505217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54544565521001) 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, 38272136 + ... + 39671721.

It is an arithmetic number, because the mean of its divisors is an integer number (13636161041313).

Almost surely, 2^{54544565521601} is an apocalyptic number.

It is an amenable number.

54544565521601 is a deficient number, since it is larger than the sum of its proper divisors (78643651).

54544565521601 is an equidigital number, since it uses as much as digits as its factorization.

54544565521601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78643650.

The product of its (nonzero) digits is 14400000, while the sum is 53.

The spelling of 54544565521601 in words is "fifty-four trillion, five hundred forty-four billion, five hundred sixty-five million, five hundred twenty-one thousand, six hundred one".