23520017 has 2 divisors, whose sum is σ = 23520018. Its totient is φ = 23520016.

The previous prime is 23519987. The next prime is 23520031. The reversal of 23520017 is 71002532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16289296 + 7230721 = 4036^2 + 2689^2 .

It is a cyclic number.

It is not a de Polignac number, because 23520017 - 2¹⁴ = 23503633 is a prime.

It is not a weakly prime, because it can be changed into another prime (23520067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11760008 + 11760009.

It is an arithmetic number, because the mean of its divisors is an integer number (11760009).

Almost surely, 2^23520017 is an apocalyptic number.

It is an amenable number.

23520017 is a deficient number, since it is larger than the sum of its proper divisors (1).

23520017 is an equidigital number, since it uses as much as digits as its factorization.

23520017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 23520017 is about 4849.7440138630. The cubic root of 23520017 is about 286.5140192960.

Adding to 23520017 its reverse (71002532), we get a palindrome (94522549).

The spelling of 23520017 in words is "twenty-three million, five hundred twenty thousand, seventeen".