55841940 has 384 divisors, whose sum is σ = 232243200. Its totient is φ = 10782720.

The previous prime is 55841927. The next prime is 55841971. The reversal of 55841940 is 4914855.

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 = 55841895 and 55841904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 706821 + ... + 706899.

It is an arithmetic number, because the mean of its divisors is an integer number (604800).

Almost surely, 2^55841940 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 55841940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116121600).

55841940 is an abundant number, since it is smaller than the sum of its proper divisors (176401260).

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

55841940 is a wasteful number, since it uses less digits than its factorization.

55841940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 55841940 is about 7472.7464830543. The cubic root of 55841940 is about 382.2259474854.

The spelling of 55841940 in words is "fifty-five million, eight hundred forty-one thousand, nine hundred forty".