22530005 has 4 divisors (see below), whose sum is σ = 27036012. Its totient is φ = 18024000.

The previous prime is 22529999. The next prime is 22530007. The reversal of 22530005 is 50003522.

22530005 is nontrivially palindromic in base 2.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5299204 + 17230801 = 2302^2 + 4151^2 .

It is not a de Polignac number, because 22530005 - 2¹⁶ = 22464469 is a prime.

It is a super-2 number, since 2×22530005² = 1015202250600050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22530007) 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, 2252996 + ... + 2253005.

It is an arithmetic number, because the mean of its divisors is an integer number (6759003).

Almost surely, 2^22530005 is an apocalyptic number.

It is an amenable number.

22530005 is a deficient number, since it is larger than the sum of its proper divisors (4506007).

22530005 is an equidigital number, since it uses as much as digits as its factorization.

22530005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506006.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 22530005 is about 4746.5782412176. The cubic root of 22530005 is about 282.4362453043.

Adding to 22530005 its reverse (50003522), we get a palindrome (72533527).

The spelling of 22530005 in words is "twenty-two million, five hundred thirty thousand, five".