22563145 has 8 divisors (see below), whose sum is σ = 29537280. Its totient is φ = 16409520.

The previous prime is 22563137. The next prime is 22563157. The reversal of 22563145 is 54136522.

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

It is not a de Polignac number, because 22563145 - 2³ = 22563137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205065 + ... + 205174.

It is an arithmetic number, because the mean of its divisors is an integer number (3692160).

Almost surely, 2^22563145 is an apocalyptic number.

It is an amenable number.

22563145 is a deficient number, since it is larger than the sum of its proper divisors (6974135).

22563145 is a wasteful number, since it uses less digits than its factorization.

22563145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410255.

The product of its digits is 7200, while the sum is 28.

The square root of 22563145 is about 4750.0678942516. The cubic root of 22563145 is about 282.5746585249.

Adding to 22563145 its reverse (54136522), we get a palindrome (76699667).

The spelling of 22563145 in words is "twenty-two million, five hundred sixty-three thousand, one hundred forty-five".