54939820 has 48 divisors (see below), whose sum is σ = 127628928. Its totient is φ = 19733760.

The previous prime is 54939803. The next prime is 54939821. The reversal of 54939820 is 2893945.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (54939821) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6765 + ... + 12475.

It is an arithmetic number, because the mean of its divisors is an integer number (2658936).

Almost surely, 2^54939820 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 54939820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63814464).

54939820 is an abundant number, since it is smaller than the sum of its proper divisors (72689108).

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

54939820 is a wasteful number, since it uses less digits than its factorization.

54939820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770 (or 5768 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 54939820 is about 7412.1400418503. The cubic root of 54939820 is about 380.1564914083.

The spelling of 54939820 in words is "fifty-four million, nine hundred thirty-nine thousand, eight hundred twenty".