54056809 has 2 divisors, whose sum is σ = 54056810. Its totient is φ = 54056808.

The previous prime is 54056801. The next prime is 54056837. The reversal of 54056809 is 90865045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53978409 + 78400 = 7347^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 54056809 - 2³ = 54056801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54056801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27028404 + 27028405.

It is an arithmetic number, because the mean of its divisors is an integer number (27028405).

Almost surely, 2^54056809 is an apocalyptic number.

It is an amenable number.

54056809 is a deficient number, since it is larger than the sum of its proper divisors (1).

54056809 is an equidigital number, since it uses as much as digits as its factorization.

54056809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 54056809 is about 7352.3335751311. Note that the first 3 decimals coincide. The cubic root of 54056809 is about 378.1088145430.

The spelling of 54056809 in words is "fifty-four million, fifty-six thousand, eight hundred nine".