23520001 has 4 divisors (see below), whose sum is σ = 23535172. Its totient is φ = 23504832.

The previous prime is 23519987. The next prime is 23520017. The reversal of 23520001 is 10002532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3806401 + 19713600 = 1951^2 + 4440^2 .

It is a cyclic number.

It is not a de Polignac number, because 23520001 - 2¹³ = 23511809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23520031) 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 in 3 ways as a sum of consecutive naturals, for example, 4956 + ... + 8461.

It is an arithmetic number, because the mean of its divisors is an integer number (5883793).

Almost surely, 2^23520001 is an apocalyptic number.

It is an amenable number.

23520001 is a deficient number, since it is larger than the sum of its proper divisors (15171).

23520001 is a wasteful number, since it uses less digits than its factorization.

23520001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15170.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 23520001 is about 4849.7423642911. The cubic root of 23520001 is about 286.5139543268.

Adding to 23520001 its reverse (10002532), we get a palindrome (33522533).

The spelling of 23520001 in words is "twenty-three million, five hundred twenty thousand, one".