23530539 has 4 divisors (see below), whose sum is σ = 31374056. Its totient is φ = 15687024.

The previous prime is 23530511. The next prime is 23530547. The reversal of 23530539 is 93503532.

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

It is not a de Polignac number, because 23530539 - 2⁷ = 23530411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23530579) 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, 3921754 + ... + 3921759.

It is an arithmetic number, because the mean of its divisors is an integer number (7843514).

Almost surely, 2^23530539 is an apocalyptic number.

23530539 is a deficient number, since it is larger than the sum of its proper divisors (7843517).

23530539 is an equidigital number, since it uses as much as digits as its factorization.

23530539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7843516.

The product of its (nonzero) digits is 12150, while the sum is 30.

The square root of 23530539 is about 4850.8286920896. The cubic root of 23530539 is about 286.5567382428.

The spelling of 23530539 in words is "twenty-three million, five hundred thirty thousand, five hundred thirty-nine".