23275621 has 4 divisors (see below), whose sum is σ = 23386144. Its totient is φ = 23165100.

The previous prime is 23275613. The next prime is 23275643. The reversal of 23275621 is 12657232.

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 23275621 - 2³ = 23275613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23275621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23275121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54945 + ... + 55366.

It is an arithmetic number, because the mean of its divisors is an integer number (5846536).

Almost surely, 2^23275621 is an apocalyptic number.

It is an amenable number.

23275621 is a deficient number, since it is larger than the sum of its proper divisors (110523).

23275621 is a wasteful number, since it uses less digits than its factorization.

23275621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110522.

The product of its digits is 5040, while the sum is 28.

The square root of 23275621 is about 4824.4814229096. The cubic root of 23275621 is about 285.5181749824.

The spelling of 23275621 in words is "twenty-three million, two hundred seventy-five thousand, six hundred twenty-one".