54408309 has 4 divisors (see below), whose sum is σ = 72544416. Its totient is φ = 36272204.

The previous prime is 54408301. The next prime is 54408329. The reversal of 54408309 is 90380445.

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 not a de Polignac number, because 54408309 - 2³ = 54408301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54408309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54408301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9068049 + ... + 9068054.

It is an arithmetic number, because the mean of its divisors is an integer number (18136104).

Almost surely, 2^54408309 is an apocalyptic number.

It is an amenable number.

54408309 is a deficient number, since it is larger than the sum of its proper divisors (18136107).

54408309 is a wasteful number, since it uses less digits than its factorization.

54408309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18136106.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 54408309 is about 7376.1988178194. The cubic root of 54408309 is about 378.9265851957.

The spelling of 54408309 in words is "fifty-four million, four hundred eight thousand, three hundred nine".