54235809 has 12 divisors (see below), whose sum is σ = 79669200. Its totient is φ = 35544024.

The previous prime is 54235793. The next prime is 54235837. The reversal of 54235809 is 90853245.

54235809 is a `hidden beast` number, since 54 + 23 + 580 + 9 = 666.

54235809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54235809 - 2⁴ = 54235793 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54235859) 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 11 ways as a sum of consecutive naturals, for example, 50539 + ... + 51600.

It is an arithmetic number, because the mean of its divisors is an integer number (6639100).

Almost surely, 2^54235809 is an apocalyptic number.

54235809 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

54235809 is a deficient number, since it is larger than the sum of its proper divisors (25433391).

54235809 is a wasteful number, since it uses less digits than its factorization.

54235809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102204 (or 102201 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 54235809 is about 7364.4965204690. The cubic root of 54235809 is about 378.5257025719.

The spelling of 54235809 in words is "fifty-four million, two hundred thirty-five thousand, eight hundred nine".