54120561 has 8 divisors (see below), whose sum is σ = 78720864. Its totient is φ = 32800320.

The previous prime is 54120557. The next prime is 54120601. The reversal of 54120561 is 16502145.

54120561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54120561 - 2² = 54120557 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54120551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819976 + ... + 820041.

It is an arithmetic number, because the mean of its divisors is an integer number (9840108).

Almost surely, 2^54120561 is an apocalyptic number.

It is an amenable number.

54120561 is a deficient number, since it is larger than the sum of its proper divisors (24600303).

54120561 is a wasteful number, since it uses less digits than its factorization.

54120561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640031.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 54120561 is about 7356.6677918743. The cubic root of 54120561 is about 378.2573972632.

The spelling of 54120561 in words is "fifty-four million, one hundred twenty thousand, five hundred sixty-one".