13500215 has 8 divisors (see below), whose sum is σ = 16466208. Its totient is φ = 10622880.

The previous prime is 13500211. The next prime is 13500259. The reversal of 13500215 is 51200531.

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

It is not a de Polignac number, because 13500215 - 2² = 13500211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13500193 and 13500202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13500211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21827 + ... + 22436.

It is an arithmetic number, because the mean of its divisors is an integer number (2058276).

Almost surely, 2^13500215 is an apocalyptic number.

13500215 is a deficient number, since it is larger than the sum of its proper divisors (2965993).

13500215 is an equidigital number, since it uses as much as digits as its factorization.

13500215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44329.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 13500215 is about 3674.2638718524. The cubic root of 13500215 is about 238.1114218301. Note that the first 3 decimals are identical.

Adding to 13500215 its reverse (51200531), we get a palindrome (64700746).

The spelling of 13500215 in words is "thirteen million, five hundred thousand, two hundred fifteen".