23053421 has 4 divisors (see below), whose sum is σ = 23235072. Its totient is φ = 22871772.

The previous prime is 23053399. The next prime is 23053423. The reversal of 23053421 is 12435032.

It is a happy number.

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 23053421 - 2¹⁸ = 22791277 is a prime.

It is a super-5 number, since 5×23053421⁵ (a number of 38 digits) contains 55555 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23053393 and 23053402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23053423) 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, 90635 + ... + 90888.

It is an arithmetic number, because the mean of its divisors is an integer number (5808768).

Almost surely, 2^23053421 is an apocalyptic number.

It is an amenable number.

23053421 is a deficient number, since it is larger than the sum of its proper divisors (181651).

23053421 is a wasteful number, since it uses less digits than its factorization.

23053421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181650.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23053421 is about 4801.3978173028. The cubic root of 23053421 is about 284.6067048673.

Adding to 23053421 its reverse (12435032), we get a palindrome (35488453).

The spelling of 23053421 in words is "twenty-three million, fifty-three thousand, four hundred twenty-one".