22530566 has 16 divisors (see below), whose sum is σ = 35214480. Its totient is φ = 10801920.

The previous prime is 22530539. The next prime is 22530569. The reversal of 22530566 is 66503522.

It is a happy number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22530569) 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, 2510 + ... + 7166.

It is an arithmetic number, because the mean of its divisors is an integer number (2200905).

Almost surely, 2^22530566 is an apocalyptic number.

22530566 is a deficient number, since it is larger than the sum of its proper divisors (12683914).

22530566 is a wasteful number, since it uses less digits than its factorization.

22530566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 22530566 is about 4746.6373360517. The cubic root of 22530566 is about 282.4385895177.

The spelling of 22530566 in words is "twenty-two million, five hundred thirty thousand, five hundred sixty-six".