100515 has 8 divisors (see below), whose sum is σ = 160848. Its totient is φ = 53600.

The previous prime is 100511. The next prime is 100517. The reversal of 100515 is 515001.

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

It is not a de Polignac number, because 100515 - 2² = 100511 is a prime.

100515 is a lucky number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 100515.

It is not an unprimeable number, because it can be changed into a prime (100511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3336 + ... + 3365.

It is an arithmetic number, because the mean of its divisors is an integer number (20106).

2¹⁰⁰⁵¹⁵ is an apocalyptic number.

100515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100515 is a deficient number, since it is larger than the sum of its proper divisors (60333).

100515 is an equidigital number, since it uses as much as digits as its factorization.

100515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6709.

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 100515 is about 317.0410068114. The cubic root of 100515 is about 46.4954325494.

Adding to 100515 its reverse (515001), we get a palindrome (615516).

The spelling of 100515 in words is "one hundred thousand, five hundred fifteen".