22530143 has 4 divisors (see below), whose sum is σ = 23715960. Its totient is φ = 21344328.

The previous prime is 22530139. The next prime is 22530161. The reversal of 22530143 is 34103522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22530143 - 2² = 22530139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22530163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592880 + ... + 592917.

It is an arithmetic number, because the mean of its divisors is an integer number (5928990).

Almost surely, 2^22530143 is an apocalyptic number.

22530143 is a deficient number, since it is larger than the sum of its proper divisors (1185817).

22530143 is a wasteful number, since it uses less digits than its factorization.

22530143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185816.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 22530143 is about 4746.5927779830. The cubic root of 22530143 is about 282.4368219594.

Adding to 22530143 its reverse (34103522), we get a palindrome (56633665).

The spelling of 22530143 in words is "twenty-two million, five hundred thirty thousand, one hundred forty-three".