23520541 has 4 divisors (see below), whose sum is σ = 25658784. Its totient is φ = 21382300.

The previous prime is 23520509. The next prime is 23520547. The reversal of 23520541 is 14502532.

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 not a de Polignac number, because 23520541 - 2⁵ = 23520509 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23520547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069105 + ... + 1069126.

It is an arithmetic number, because the mean of its divisors is an integer number (6414696).

Almost surely, 2^23520541 is an apocalyptic number.

It is an amenable number.

23520541 is a deficient number, since it is larger than the sum of its proper divisors (2138243).

23520541 is a wasteful number, since it uses less digits than its factorization.

23520541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138242.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 23520541 is about 4849.7980370321. The cubic root of 23520541 is about 286.5161470188.

Subtracting from 23520541 its reverse (14502532), we obtain a square (9018009 = 3003²).

The spelling of 23520541 in words is "twenty-three million, five hundred twenty thousand, five hundred forty-one".