23550421 has 4 divisors (see below), whose sum is σ = 24310144. Its totient is φ = 22790700.

The previous prime is 23550419. The next prime is 23550427. The reversal of 23550421 is 12405532.

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 23550421 - 2¹ = 23550419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23550392 and 23550401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23550427) 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, 379815 + ... + 379876.

It is an arithmetic number, because the mean of its divisors is an integer number (6077536).

Almost surely, 2^23550421 is an apocalyptic number.

It is an amenable number.

23550421 is a deficient number, since it is larger than the sum of its proper divisors (759723).

23550421 is an equidigital number, since it uses as much as digits as its factorization.

23550421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759722.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 23550421 is about 4852.8775999401. The cubic root of 23550421 is about 286.6374237041.

Adding to 23550421 its reverse (12405532), we get a palindrome (35955953).

The spelling of 23550421 in words is "twenty-three million, five hundred fifty thousand, four hundred twenty-one".