54809208 has 72 divisors (see below), whose sum is σ = 151853520. Its totient is φ = 17858880.

The previous prime is 54809197. The next prime is 54809213. The reversal of 54809208 is 80290845.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 202113 + ... + 202383.

Almost surely, 2^54809208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54809208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75926760).

54809208 is an abundant number, since it is smaller than the sum of its proper divisors (97044312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54809208 is a wasteful number, since it uses less digits than its factorization.

54809208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 54809208 is about 7403.3241182593. The cubic root of 54809208 is about 379.8549954595.

The spelling of 54809208 in words is "fifty-four million, eight hundred nine thousand, two hundred eight".