54789920 has 96 divisors (see below), whose sum is σ = 138801600. Its totient is φ = 20376576.

The previous prime is 54789881. The next prime is 54789947. The reversal of 54789920 is 2998745.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203546 + ... + 203814.

It is an arithmetic number, because the mean of its divisors is an integer number (1445850).

Almost surely, 2^54789920 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 54789920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69400800).

54789920 is an abundant number, since it is smaller than the sum of its proper divisors (84011680).

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

54789920 is a wasteful number, since it uses less digits than its factorization.

54789920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 54789920 is about 7402.0213455515. The cubic root of 54789920 is about 379.8104317628.

The spelling of 54789920 in words is "fifty-four million, seven hundred eighty-nine thousand, nine hundred twenty".