100115005 has 4 divisors (see below), whose sum is σ = 120138012. Its totient is φ = 80092000.

The previous prime is 100115003. The next prime is 100115011. The reversal of 100115005 is 500511001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500511001 = 397 ⋅1260733.

It can be written as a sum of positive squares in 2 ways, for example, as 71267364 + 28847641 = 8442^2 + 5371^2 .

It is not a de Polignac number, because 100115005 - 2¹ = 100115003 is a prime.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100115003) 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 3 ways as a sum of consecutive naturals, for example, 10011496 + ... + 10011505.

It is an arithmetic number, because the mean of its divisors is an integer number (30034503).

Almost surely, 2^100115005 is an apocalyptic number.

It is an amenable number.

100115005 is a deficient number, since it is larger than the sum of its proper divisors (20023007).

100115005 is an equidigital number, since it uses as much as digits as its factorization.

100115005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20023006.

The product of its (nonzero) digits is 25, while the sum is 13.

The square root of 100115005 is about 10005.7485976812. The cubic root of 100115005 is about 464.3367505013.

Adding to 100115005 its reverse (500511001), we get a palindrome (600626006).

It can be divided in two parts, 10011 and 5005, that multiplied together give a triangular number (50105055 = T₁₀₀₁₀).

The spelling of 100115005 in words is "one hundred million, one hundred fifteen thousand, five".