55105422100 has 18 divisors (see below), whose sum is σ = 119578766174. Its totient is φ = 22042168800.

The previous prime is 55105422077. The next prime is 55105422103. The reversal of 55105422100 is 122450155.

It can be written as a sum of positive squares in 3 ways, for example, as 6169788304 + 48935633796 = 78548^2 + 221214^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55105422103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275527011 + ... + 275527210.

Almost surely, 2^55105422100 is an apocalyptic number.

55105422100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55105422100 is an abundant number, since it is smaller than the sum of its proper divisors (64473344074).

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

55105422100 is a wasteful number, since it uses less digits than its factorization.

55105422100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551054235 (or 551054228 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 55105422100 its reverse (122450155), we get a palindrome (55227872255).

The spelling of 55105422100 in words is "fifty-five billion, one hundred five million, four hundred twenty-two thousand, one hundred".