54017809 has 4 divisors (see below), whose sum is σ = 54032704. Its totient is φ = 54002916.

The previous prime is 54017797. The next prime is 54017813. The reversal of 54017809 is 90871045.

It is a happy number.

54017809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 54017809 - 2⁷ = 54017681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54017819) 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 3 ways as a sum of consecutive naturals, for example, 1924 + ... + 10570.

It is an arithmetic number, because the mean of its divisors is an integer number (13508176).

Almost surely, 2^54017809 is an apocalyptic number.

It is an amenable number.

54017809 is a deficient number, since it is larger than the sum of its proper divisors (14895).

54017809 is an equidigital number, since it uses as much as digits as its factorization.

54017809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14894.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 54017809 is about 7349.6808774259. The cubic root of 54017809 is about 378.0178621310.

The spelling of 54017809 in words is "fifty-four million, seventeen thousand, eight hundred nine".