22113505 has 8 divisors (see below), whose sum is σ = 26591400. Its totient is φ = 17654016.

The previous prime is 22113503. The next prime is 22113521. The reversal of 22113505 is 50531122.

It can be written as a sum of positive squares in 4 ways, for example, as 9659664 + 12453841 = 3108^2 + 3529^2 .

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 22113505 - 2¹ = 22113503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22113503) 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, 1800 + ... + 6889.

It is an arithmetic number, because the mean of its divisors is an integer number (3323925).

Almost surely, 2^22113505 is an apocalyptic number.

It is an amenable number.

22113505 is a deficient number, since it is larger than the sum of its proper divisors (4477895).

22113505 is an equidigital number, since it uses as much as digits as its factorization.

22113505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9203.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 22113505 is about 4702.4998670920. The cubic root of 22113505 is about 280.6849937787.

Adding to 22113505 its reverse (50531122), we get a palindrome (72644627).

The spelling of 22113505 in words is "twenty-two million, one hundred thirteen thousand, five hundred five".