20552200 has 24 divisors (see below), whose sum is σ = 47784330. Its totient is φ = 8220800.

The previous prime is 20552177. The next prime is 20552249. The reversal of 20552200 is 225502.

It can be written as a sum of positive squares in 3 ways, for example, as 19731364 + 820836 = 4442^2 + 906^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51181 + ... + 51580.

Almost surely, 2^20552200 is an apocalyptic number.

20552200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20552200 is an abundant number, since it is smaller than the sum of its proper divisors (27232130).

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

20552200 is a wasteful number, since it uses less digits than its factorization.

20552200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102777 (or 102768 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 20552200 is about 4533.4534297818. The cubic root of 20552200 is about 273.9172854916.

Adding to 20552200 its reverse (225502), we get a palindrome (20777702).

The spelling of 20552200 in words is "twenty million, five hundred fifty-two thousand, two hundred".