23506261 has 4 divisors (see below), whose sum is σ = 23522400. Its totient is φ = 23490124.

The previous prime is 23506229. The next prime is 23506279. The reversal of 23506261 is 16260532.

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 23506261 - 2⁵ = 23506229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23506201) 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, 5641 + ... + 8878.

It is an arithmetic number, because the mean of its divisors is an integer number (5880600).

Almost surely, 2^23506261 is an apocalyptic number.

It is an amenable number.

23506261 is a deficient number, since it is larger than the sum of its proper divisors (16139).

23506261 is a wasteful number, since it uses less digits than its factorization.

23506261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16138.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 23506261 is about 4848.3255872517. The cubic root of 23506261 is about 286.4581512033.

Adding to 23506261 its reverse (16260532), we get a palindrome (39766793).

The spelling of 23506261 in words is "twenty-three million, five hundred six thousand, two hundred sixty-one".