100555555 has 8 divisors (see below), whose sum is σ = 120858192. Its totient is φ = 80316768.

The previous prime is 100555523. The next prime is 100555571. The reversal of 100555555 is 555555001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100555555 - 2⁵ = 100555523 is a prime.

It is a super-2 number, since 2×100555555² = 20222839282716050, which contains 22 as substring.

It is a Duffinian number.

100555555 is a modest number, since divided by 55555 gives 1005 as remainder.

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 7 ways as a sum of consecutive naturals, for example, 12424 + ... + 18853.

It is an arithmetic number, because the mean of its divisors is an integer number (15107274).

Almost surely, 2^100555555 is an apocalyptic number.

100555555 is a deficient number, since it is larger than the sum of its proper divisors (20302637).

100555555 is an equidigital number, since it uses as much as digits as its factorization.

100555555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31925.

The product of its (nonzero) digits is 15625, while the sum is 31.

The square root of 100555555 is about 10027.7392766266. The cubic root of 100555555 is about 465.0168491216.

The spelling of 100555555 in words is "one hundred million, five hundred fifty-five thousand, five hundred fifty-five".