23554621 has 4 divisors (see below), whose sum is σ = 23589792. Its totient is φ = 23519452.

The previous prime is 23554603. The next prime is 23554627. The reversal of 23554621 is 12645532.

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 23554621 - 2⁵ = 23554589 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 23554621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23554627) 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, 16561 + ... + 17926.

It is an arithmetic number, because the mean of its divisors is an integer number (5897448).

Almost surely, 2^23554621 is an apocalyptic number.

It is an amenable number.

23554621 is a deficient number, since it is larger than the sum of its proper divisors (35171).

23554621 is an equidigital number, since it uses as much as digits as its factorization.

23554621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35170.

The product of its digits is 7200, while the sum is 28.

The square root of 23554621 is about 4853.3103135901. The cubic root of 23554621 is about 286.6544624033.

The spelling of 23554621 in words is "twenty-three million, five hundred fifty-four thousand, six hundred twenty-one".