10015 has 4 divisors (see below), whose sum is σ = 12024. Its totient is φ = 8008.

The previous prime is 10009. The next prime is 10037. The reversal of 10015 is 51001.

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 10015 - 2³ = 10007 is a prime.

It is a Duffinian number.

10015 is a modest number, since divided by 15 gives 10 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997 + ... + 1006.

It is an arithmetic number, because the mean of its divisors is an integer number (3006).

2¹⁰⁰¹⁵ is an apocalyptic number.

10015 is a deficient number, since it is larger than the sum of its proper divisors (2009).

10015 is an equidigital number, since it uses as much as digits as its factorization.

10015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008.

The product of its (nonzero) digits is 5, while the sum is 7.

The square root of 10015 is about 100.0749718961. The cubic root of 10015 is about 21.5551136922. Note that the first 3 decimals are identical.

Adding to 10015 its reverse (51001), we get a palindrome (61016).

It can be divided in two parts, 1001 and 5, that multiplied together give a palindrome (5005).

The spelling of 10015 in words is "ten thousand, fifteen".