23421253 has 2 divisors, whose sum is σ = 23421254. Its totient is φ = 23421252.

The previous prime is 23421221. The next prime is 23421269. The reversal of 23421253 is 35212432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18122049 + 5299204 = 4257^2 + 2302^2 .

It is a cyclic number.

It is not a de Polignac number, because 23421253 - 2⁵ = 23421221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23421353) 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 as a sum of consecutive naturals, namely, 11710626 + 11710627.

It is an arithmetic number, because the mean of its divisors is an integer number (11710627).

Almost surely, 2^23421253 is an apocalyptic number.

It is an amenable number.

23421253 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421253 is an equidigital number, since it uses as much as digits as its factorization.

23421253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 22.

The square root of 23421253 is about 4839.5509089171. The cubic root of 23421253 is about 286.1124185178.

Adding to 23421253 its reverse (35212432), we get a palindrome (58633685).

The spelling of 23421253 in words is "twenty-three million, four hundred twenty-one thousand, two hundred fifty-three".