23564573 has 2 divisors, whose sum is σ = 23564574. Its totient is φ = 23564572.

The previous prime is 23564551. The next prime is 23564591. The reversal of 23564573 is 37546532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20403289 + 3161284 = 4517^2 + 1778^2 .

It is a cyclic number.

It is not a de Polignac number, because 23564573 - 2¹⁰ = 23563549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23564543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11782286 + 11782287.

It is an arithmetic number, because the mean of its divisors is an integer number (11782287).

Almost surely, 2^23564573 is an apocalyptic number.

It is an amenable number.

23564573 is a deficient number, since it is larger than the sum of its proper divisors (1).

23564573 is an equidigital number, since it uses as much as digits as its factorization.

23564573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 35.

The square root of 23564573 is about 4854.3354849042. The cubic root of 23564573 is about 286.6948279227.

The spelling of 23564573 in words is "twenty-three million, five hundred sixty-four thousand, five hundred seventy-three".