22530461 has 2 divisors, whose sum is σ = 22530462. Its totient is φ = 22530460.

The previous prime is 22530451. The next prime is 22530463. The reversal of 22530461 is 16403522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 534361 = 4690^2 + 731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22530461 is a prime.

Together with 22530463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22530463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11265230 + 11265231.

It is an arithmetic number, because the mean of its divisors is an integer number (11265231).

Almost surely, 2^22530461 is an apocalyptic number.

It is an amenable number.

22530461 is a deficient number, since it is larger than the sum of its proper divisors (1).

22530461 is an equidigital number, since it uses as much as digits as its factorization.

22530461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 22530461 is about 4746.6262755772. The cubic root of 22530461 is about 282.4381507642.

Adding to 22530461 its reverse (16403522), we get a palindrome (38933983).

The spelling of 22530461 in words is "twenty-two million, five hundred thirty thousand, four hundred sixty-one".