1020200055 has 32 divisors (see below), whose sum is σ = 1870041600. Its totient is φ = 465244032.

The previous prime is 1020200033. The next prime is 1020200057. The reversal of 1020200055 is 5500020201.

It is not a de Polignac number, because 1020200055 - 2⁵ = 1020200023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020200057) 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 31 ways as a sum of consecutive naturals, for example, 32401 + ... + 55589.

It is an arithmetic number, because the mean of its divisors is an integer number (58438800).

Almost surely, 2^1020200055 is an apocalyptic number.

1020200055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020200055 is a deficient number, since it is larger than the sum of its proper divisors (849841545).

1020200055 is a wasteful number, since it uses less digits than its factorization.

1020200055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23623.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 1020200055 is about 31940.5706743007. The cubic root of 1020200055 is about 1006.6885156849.

Adding to 1020200055 its reverse (5500020201), we get a palindrome (6520220256).

The spelling of 1020200055 in words is "one billion, twenty million, two hundred thousand, fifty-five".