22223505 has 16 divisors (see below), whose sum is σ = 37649664. Its totient is φ = 11155200.

The previous prime is 22223501. The next prime is 22223519. The reversal of 22223505 is 50532222.

It is not a de Polignac number, because 22223505 - 2² = 22223501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22223501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43321 + ... + 43830.

It is an arithmetic number, because the mean of its divisors is an integer number (2353104).

Almost surely, 2^22223505 is an apocalyptic number.

It is an amenable number.

22223505 is a deficient number, since it is larger than the sum of its proper divisors (15426159).

22223505 is a wasteful number, since it uses less digits than its factorization.

22223505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87176.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 22223505 is about 4714.1812650767. The cubic root of 22223505 is about 281.1496313466.

Adding to 22223505 its reverse (50532222), we get a palindrome (72755727).

The spelling of 22223505 in words is "twenty-two million, two hundred twenty-three thousand, five hundred five".