22530545 has 4 divisors (see below), whose sum is σ = 27036660. Its totient is φ = 18024432.

The previous prime is 22530539. The next prime is 22530569. The reversal of 22530545 is 54503522.

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 6071296 + 16459249 = 2464^2 + 4057^2 .

It is a cyclic number.

It is not a de Polignac number, because 22530545 - 2¹⁴ = 22514161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2253050 + ... + 2253059.

It is an arithmetic number, because the mean of its divisors is an integer number (6759165).

Almost surely, 2^22530545 is an apocalyptic number.

It is an amenable number.

22530545 is a deficient number, since it is larger than the sum of its proper divisors (4506115).

22530545 is an equidigital number, since it uses as much as digits as its factorization.

22530545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506114.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 22530545 is about 4746.6351239589. The cubic root of 22530545 is about 282.4385017671.

The spelling of 22530545 in words is "twenty-two million, five hundred thirty thousand, five hundred forty-five".