23167621 has 2 divisors, whose sum is σ = 23167622. Its totient is φ = 23167620.

The previous prime is 23167591. The next prime is 23167637. The reversal of 23167621 is 12676132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15249025 + 7918596 = 3905^2 + 2814^2 .

It is a cyclic number.

It is not a de Polignac number, because 23167621 - 2⁷ = 23167493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23167621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23167691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11583810 + 11583811.

It is an arithmetic number, because the mean of its divisors is an integer number (11583811).

Almost surely, 2^23167621 is an apocalyptic number.

It is an amenable number.

23167621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23167621 is an equidigital number, since it uses as much as digits as its factorization.

23167621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 23167621 is about 4813.2754959591. The cubic root of 23167621 is about 285.0758841741.

The spelling of 23167621 in words is "twenty-three million, one hundred sixty-seven thousand, six hundred twenty-one".