55255650 has 48 divisors (see below), whose sum is σ = 138607200. Its totient is φ = 14565760.

The previous prime is 55255649. The next prime is 55255657. The reversal of 55255650 is 5655255.

It is not an unprimeable number, because it can be changed into a prime (55255657) 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 23 ways as a sum of consecutive naturals, for example, 11281 + ... + 15419.

It is an arithmetic number, because the mean of its divisors is an integer number (2887650).

Almost surely, 2^55255650 is an apocalyptic number.

55255650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55255650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69303600).

55255650 is an abundant number, since it is smaller than the sum of its proper divisors (83351550).

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

55255650 is a wasteful number, since it uses less digits than its factorization.

55255650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243 (or 4238 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 55255650 is about 7433.4144240719. The cubic root of 55255650 is about 380.8835626309.

It can be divided in two parts, 5525 and 5650, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 55255650 in words is "fifty-five million, two hundred fifty-five thousand, six hundred fifty".