22550550 has 96 divisors (see below), whose sum is σ = 62138880. Its totient is φ = 5366400.

The previous prime is 22550537. The next prime is 22550579. The reversal of 22550550 is 5505522.

It is a self number, because there is not a number n which added to its sum of digits gives 22550550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130264 + ... + 130436.

It is an arithmetic number, because the mean of its divisors is an integer number (647280).

Almost surely, 2^22550550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22550550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31069440).

22550550 is an abundant number, since it is smaller than the sum of its proper divisors (39588330).

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

22550550 is a wasteful number, since it uses less digits than its factorization.

22550550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 22550550 is about 4748.7419386612. The cubic root of 22550550 is about 282.5220699598.

It can be divided in two parts, 2 and 2550550, that added together give a palindrome (2550552).

The spelling of 22550550 in words is "twenty-two million, five hundred fifty thousand, five hundred fifty".