200000055 has 16 divisors (see below), whose sum is σ = 321017184. Its totient is φ = 106327680.

The previous prime is 200000051. The next prime is 200000069. The reversal of 200000055 is 550000002.

It is not a de Polignac number, because 200000055 - 2² = 200000051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16276 + ... + 25785.

It is an arithmetic number, because the mean of its divisors is an integer number (20063574).

Almost surely, 2^200000055 is an apocalyptic number.

200000055 is a deficient number, since it is larger than the sum of its proper divisors (121017129).

200000055 is a wasteful number, since it uses less digits than its factorization.

200000055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42386.

The product of its (nonzero) digits is 50, while the sum is 12.

The square root of 200000055 is about 14142.1375682745. The cubic root of 200000055 is about 584.8036012496.

Adding to 200000055 its reverse (550000002), we get a palindrome (750000057).

The spelling of 200000055 in words is "two hundred million, fifty-five", and thus it is an aban number.