22315 has 4 divisors (see below), whose sum is σ = 26784. Its totient is φ = 17848.

The previous prime is 22307. The next prime is 22343. The reversal of 22315 is 51322.

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 22315 - 2³ = 22307 is a prime.

It is a super-3 number, since 3×22315³ = 33335880317625, which contains 333 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁶ + 2⁶ + 3⁸ + 1 + 5⁶ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22295 and 22304.

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, 2227 + ... + 2236.

It is an arithmetic number, because the mean of its divisors is an integer number (6696).

2²²³¹⁵ is an apocalyptic number.

22315 is a deficient number, since it is larger than the sum of its proper divisors (4469).

22315 is an equidigital number, since it uses as much as digits as its factorization.

22315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4468.

The product of its digits is 60, while the sum is 13.

The square root of 22315 is about 149.3820605026. The cubic root of 22315 is about 28.1534937566.

Adding to 22315 its reverse (51322), we get a palindrome (73637).

The spelling of 22315 in words is "twenty-two thousand, three hundred fifteen".