23536021 has 4 divisors (see below), whose sum is σ = 23721472. Its totient is φ = 23350572.

The previous prime is 23536001. The next prime is 23536039. The reversal of 23536021 is 12063532.

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 23536021 - 2⁵ = 23535989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23535983 and 23536001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23536001) 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, 92535 + ... + 92788.

It is an arithmetic number, because the mean of its divisors is an integer number (5930368).

Almost surely, 2^23536021 is an apocalyptic number.

It is an amenable number.

23536021 is a deficient number, since it is larger than the sum of its proper divisors (185451).

23536021 is a wasteful number, since it uses less digits than its factorization.

23536021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185450.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 23536021 is about 4851.3937172734. The cubic root of 23536021 is about 286.5789899227.

Adding to 23536021 its reverse (12063532), we get a palindrome (35599553).

The spelling of 23536021 in words is "twenty-three million, five hundred thirty-six thousand, twenty-one".