23520533 has 4 divisors (see below), whose sum is σ = 23545728. Its totient is φ = 23495340.

The previous prime is 23520509. The next prime is 23520547. The reversal of 23520533 is 33502532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23520533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23520499 and 23520508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23520733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11141 + ... + 13082.

It is an arithmetic number, because the mean of its divisors is an integer number (5886432).

Almost surely, 2^23520533 is an apocalyptic number.

It is an amenable number.

23520533 is a deficient number, since it is larger than the sum of its proper divisors (25195).

23520533 is an equidigital number, since it uses as much as digits as its factorization.

23520533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25194.

The product of its (nonzero) digits is 2700, while the sum is 23.

The square root of 23520533 is about 4849.7972122554. The cubic root of 23520533 is about 286.5161145347.

The spelling of 23520533 in words is "twenty-three million, five hundred twenty thousand, five hundred thirty-three".