23572321 has 2 divisors, whose sum is σ = 23572322. Its totient is φ = 23572320.

The previous prime is 23572303. The next prime is 23572327. The reversal of 23572321 is 12327532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23571025 + 1296 = 4855^2 + 36^2 .

It is a cyclic number.

It is not a de Polignac number, because 23572321 - 2⁷ = 23572193 is a prime.

It is not a weakly prime, because it can be changed into another prime (23572327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11786160 + 11786161.

It is an arithmetic number, because the mean of its divisors is an integer number (11786161).

Almost surely, 2^23572321 is an apocalyptic number.

It is an amenable number.

23572321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23572321 is an equidigital number, since it uses as much as digits as its factorization.

23572321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 25.

The square root of 23572321 is about 4855.1334688142. The cubic root of 23572321 is about 286.7262461045.

Adding to 23572321 its reverse (12327532), we get a palindrome (35899853).

The spelling of 23572321 in words is "twenty-three million, five hundred seventy-two thousand, three hundred twenty-one".