54559891 has 2 divisors, whose sum is σ = 54559892. Its totient is φ = 54559890.

The previous prime is 54559873. The next prime is 54559927. The reversal of 54559891 is 19895545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54559891 - 2⁷ = 54559763 is a prime.

It is not a weakly prime, because it can be changed into another prime (54559861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27279945 + 27279946.

It is an arithmetic number, because the mean of its divisors is an integer number (27279946).

Almost surely, 2^54559891 is an apocalyptic number.

54559891 is a deficient number, since it is larger than the sum of its proper divisors (1).

54559891 is an equidigital number, since it uses as much as digits as its factorization.

54559891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324000, while the sum is 46.

The square root of 54559891 is about 7386.4667466929. The cubic root of 54559891 is about 379.2781564401.

The spelling of 54559891 in words is "fifty-four million, five hundred fifty-nine thousand, eight hundred ninety-one".