20550200 has 48 divisors (see below), whose sum is σ = 52128360. Its totient is φ = 7472000.

The previous prime is 20550199. The next prime is 20550209. The reversal of 20550200 is 205502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20550209) 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 11 ways as a sum of consecutive naturals, for example, 2471 + ... + 6870.

Almost surely, 2^20550200 is an apocalyptic number.

20550200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20550200 is an abundant number, since it is smaller than the sum of its proper divisors (31578160).

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

20550200 is a wasteful number, since it uses less digits than its factorization.

20550200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9368 (or 9359 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 20550200 is about 4533.2328420234. The cubic root of 20550200 is about 273.9083999490.

20550200 divided by its product of nonzero digits (100) gives a palindrome (205502).

Adding to 20550200 its reverse (205502), we get a palindrome (20755702).

Multiplying 20550200 by its reverse (205502), we get a square (4223107200400 = 2055020²).

20550200 divided by its reverse (205502) gives a square (100 = 10²).

It can be divided in two parts, 205 and 50200, that added together give a palindrome (50405).

The spelling of 20550200 in words is "twenty million, five hundred fifty thousand, two hundred".