22215563 has 8 divisors (see below), whose sum is σ = 23288496. Its totient is φ = 21168000.

The previous prime is 22215551. The next prime is 22215569. The reversal of 22215563 is 36551222.

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

It is a cyclic number.

It is not a de Polignac number, because 22215563 - 2⁴ = 22215547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22215569) 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, 4538 + ... + 8063.

It is an arithmetic number, because the mean of its divisors is an integer number (2911062).

Almost surely, 2^22215563 is an apocalyptic number.

22215563 is a deficient number, since it is larger than the sum of its proper divisors (1072933).

22215563 is a wasteful number, since it uses less digits than its factorization.

22215563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12685.

The product of its digits is 3600, while the sum is 26.

The square root of 22215563 is about 4713.3388378091. The cubic root of 22215563 is about 281.1161359339.

Adding to 22215563 its reverse (36551222), we get a palindrome (58766785).

The spelling of 22215563 in words is "twenty-two million, two hundred fifteen thousand, five hundred sixty-three".