55382940 has 120 divisors (see below), whose sum is σ = 184049712. Its totient is φ = 13893120.

The previous prime is 55382939. The next prime is 55382947. The reversal of 55382940 is 4928355.

55382940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 55382895 and 55382904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55382947) 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 39 ways as a sum of consecutive naturals, for example, 26535 + ... + 28545.

Almost surely, 2^55382940 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 55382940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92024856).

55382940 is an abundant number, since it is smaller than the sum of its proper divisors (128666772).

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

55382940 is a wasteful number, since it uses less digits than its factorization.

55382940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049 (or 2038 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 55382940 is about 7441.9715129796. The cubic root of 55382940 is about 381.1758132100.

The spelling of 55382940 in words is "fifty-five million, three hundred eighty-two thousand, nine hundred forty".