100015015 has 4 divisors (see below), whose sum is σ = 120018024. Its totient is φ = 80012008.

The previous prime is 100015009. The next prime is 100015039. The reversal of 100015015 is 510510001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100015015 - 2⁵ = 100014983 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.

100015015 is a modest number, since divided by 15015 gives 100 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 100014986 and 100015004.

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 3 ways as a sum of consecutive naturals, for example, 10001497 + ... + 10001506.

It is an arithmetic number, because the mean of its divisors is an integer number (30004506).

Almost surely, 2^100015015 is an apocalyptic number.

100015015 is a deficient number, since it is larger than the sum of its proper divisors (20003009).

100015015 is an equidigital number, since it uses as much as digits as its factorization.

100015015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20003008.

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

The square root of 100015015 is about 10000.7507218208. The cubic root of 100015015 is about 464.1821133508.

Adding to 100015015 its reverse (510510001), we get a palindrome (610525016).

The spelling of 100015015 in words is "one hundred million, fifteen thousand, fifteen".