54387209 has 8 divisors (see below), whose sum is σ = 56357760. Its totient is φ = 52423056.

The previous prime is 54387191. The next prime is 54387259. The reversal of 54387209 is 90278345.

54387209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54387209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54387259) 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 7 ways as a sum of consecutive naturals, for example, 21632 + ... + 24014.

It is an arithmetic number, because the mean of its divisors is an integer number (7044720).

Almost surely, 2^54387209 is an apocalyptic number.

It is an amenable number.

54387209 is a deficient number, since it is larger than the sum of its proper divisors (1970551).

54387209 is a wasteful number, since it uses less digits than its factorization.

54387209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 54387209 is about 7374.7684031432. The cubic root of 54387209 is about 378.8775952229.

The spelling of 54387209 in words is "fifty-four million, three hundred eighty-seven thousand, two hundred nine".