100555005 has 16 divisors (see below), whose sum is σ = 161126784. Its totient is φ = 53549760.

The previous prime is 100555003. The next prime is 100555009. The reversal of 100555005 is 500555001.

It is not a de Polignac number, because 100555005 - 2¹ = 100555003 is a prime.

It is a super-2 number, since 2×100555005² = 20222618061100050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100555003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6295 + ... + 15515.

It is an arithmetic number, because the mean of its divisors is an integer number (10070424).

Almost surely, 2^100555005 is an apocalyptic number.

100555005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100555005 is a deficient number, since it is larger than the sum of its proper divisors (60571779).

100555005 is an equidigital number, since it uses as much as digits as its factorization.

100555005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9956.

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 100555005 is about 10027.7118526611. The cubic root of 100555005 is about 465.0160012993.

The spelling of 100555005 in words is "one hundred million, five hundred fifty-five thousand, five".