100000055 has 16 divisors (see below), whose sum is σ = 121521600. Its totient is φ = 78993408.

The previous prime is 100000049. The next prime is 100000073. The reversal of 100000055 is 550000001.

It is a cyclic number.

It is not a de Polignac number, because 100000055 - 2⁴ = 100000039 is a prime.

It is a super-2 number, since 2×100000055² = 20000022000006050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99999991 and 100000045.

It is a congruent number.

It is an unprimeable number.

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, 166646 + ... + 167244.

It is an arithmetic number, because the mean of its divisors is an integer number (7595100).

Almost surely, 2^100000055 is an apocalyptic number.

100000055 is a deficient number, since it is larger than the sum of its proper divisors (21521545).

100000055 is a wasteful number, since it uses less digits than its factorization.

100000055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970.

The product of its (nonzero) digits is 25, while the sum is 11.

The square root of 100000055 is about 10000.0027499996. The cubic root of 100000055 is about 464.1589684571.

Adding to 100000055 its reverse (550000001), we get a palindrome (650000056).

The spelling of 100000055 in words is "one hundred million, fifty-five", and thus it is an aban number.