23205541 has 2 divisors, whose sum is σ = 23205542. Its totient is φ = 23205540.

The previous prime is 23205521. The next prime is 23205557. The reversal of 23205541 is 14550232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23184225 + 21316 = 4815^2 + 146^2 .

It is a cyclic number.

It is not a de Polignac number, because 23205541 - 2¹¹ = 23203493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23205521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11602770 + 11602771.

It is an arithmetic number, because the mean of its divisors is an integer number (11602771).

Almost surely, 2^23205541 is an apocalyptic number.

It is an amenable number.

23205541 is a deficient number, since it is larger than the sum of its proper divisors (1).

23205541 is an equidigital number, since it uses as much as digits as its factorization.

23205541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 23205541 is about 4817.2129909316. The cubic root of 23205541 is about 285.2313336701.

Adding to 23205541 its reverse (14550232), we get a palindrome (37755773).

The spelling of 23205541 in words is "twenty-three million, two hundred five thousand, five hundred forty-one".