55205928 has 64 divisors (see below), whose sum is σ = 153964800. Its totient is φ = 18328320.

The previous prime is 55205903. The next prime is 55205929. The reversal of 55205928 is 82950255.

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 = 55205892 and 55205901.

It is not an unprimeable number, because it can be changed into a prime (55205929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92800 + ... + 93392.

It is an arithmetic number, because the mean of its divisors is an integer number (2405700).

Almost surely, 2^55205928 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 55205928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76982400).

55205928 is an abundant number, since it is smaller than the sum of its proper divisors (98758872).

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

55205928 is a wasteful number, since it uses less digits than its factorization.

55205928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 55205928 is about 7430.0691786820. The cubic root of 55205928 is about 380.7692818535.

The spelling of 55205928 in words is "fifty-five million, two hundred five thousand, nine hundred twenty-eight".