22201545 has 16 divisors (see below), whose sum is σ = 36349632. Its totient is φ = 11565120.

The previous prime is 22201513. The next prime is 22201561. The reversal of 22201545 is 54510222.

It is a happy number.

It is not a de Polignac number, because 22201545 - 2⁵ = 22201513 is a prime.

It is an unprimeable number.

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, 16566 + ... + 17855.

It is an arithmetic number, because the mean of its divisors is an integer number (2271852).

Almost surely, 2^22201545 is an apocalyptic number.

It is an amenable number.

22201545 is a deficient number, since it is larger than the sum of its proper divisors (14148087).

22201545 is a wasteful number, since it uses less digits than its factorization.

22201545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34472.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22201545 is about 4711.8515468975. The cubic root of 22201545 is about 281.0569954844.

Adding to 22201545 its reverse (54510222), we get a palindrome (76711767).

The spelling of 22201545 in words is "twenty-two million, two hundred one thousand, five hundred forty-five".