4205550 has 72 divisors (see below), whose sum is σ = 11108664. Its totient is φ = 1052480.

The previous prime is 4205549. The next prime is 4205569. The reversal of 4205550 is 555024.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 79324 + ... + 79376.

It is an arithmetic number, because the mean of its divisors is an integer number (154287).

Almost surely, 2^4205550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4205550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5554332).

4205550 is an abundant number, since it is smaller than the sum of its proper divisors (6903114).

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

4205550 is a wasteful number, since it uses less digits than its factorization.

4205550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 4205550 is about 2050.7437675146. The cubic root of 4205550 is about 161.4139010122.

The spelling of 4205550 in words is "four million, two hundred five thousand, five hundred fifty".