54075809 has 4 divisors (see below), whose sum is σ = 54165504. Its totient is φ = 53986116.

The previous prime is 54075799. The next prime is 54075823. The reversal of 54075809 is 90857045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54075809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54075839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43937 + ... + 45150.

It is an arithmetic number, because the mean of its divisors is an integer number (13541376).

Almost surely, 2^54075809 is an apocalyptic number.

It is an amenable number.

54075809 is a deficient number, since it is larger than the sum of its proper divisors (89695).

54075809 is an equidigital number, since it uses as much as digits as its factorization.

54075809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89694.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 54075809 is about 7353.6255683846. The cubic root of 54075809 is about 378.1531088455.

The spelling of 54075809 in words is "fifty-four million, seventy-five thousand, eight hundred nine".