23591573 has 2 divisors, whose sum is σ = 23591574. Its totient is φ = 23591572.

The previous prime is 23591549. The next prime is 23591591. The reversal of 23591573 is 37519532.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23251684 + 339889 = 4822^2 + 583^2 .

It is a cyclic number.

It is not a de Polignac number, because 23591573 - 2⁸ = 23591317 is a prime.

It is a super-2 number, since 2×23591573² = 1113124633228658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23591593) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11795786 + 11795787.

It is an arithmetic number, because the mean of its divisors is an integer number (11795787).

Almost surely, 2^23591573 is an apocalyptic number.

It is an amenable number.

23591573 is a deficient number, since it is larger than the sum of its proper divisors (1).

23591573 is an equidigital number, since it uses as much as digits as its factorization.

23591573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350, while the sum is 35.

The square root of 23591573 is about 4857.1157079073. The cubic root of 23591573 is about 286.8042832735.

The spelling of 23591573 in words is "twenty-three million, five hundred ninety-one thousand, five hundred seventy-three".