23420533 has 2 divisors, whose sum is σ = 23420534. Its totient is φ = 23420532.

The previous prime is 23420479. The next prime is 23420563. The reversal of 23420533 is 33502432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15984004 + 7436529 = 3998^2 + 2727^2 .

It is a cyclic number.

It is not a de Polignac number, because 23420533 - 2⁹ = 23420021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23420563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710266 + 11710267.

It is an arithmetic number, because the mean of its divisors is an integer number (11710267).

Almost surely, 2^23420533 is an apocalyptic number.

It is an amenable number.

23420533 is a deficient number, since it is larger than the sum of its proper divisors (1).

23420533 is an equidigital number, since it uses as much as digits as its factorization.

23420533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 23420533 is about 4839.4765212779. The cubic root of 23420533 is about 286.1094866642.

Adding to 23420533 its reverse (33502432), we get a palindrome (56922965).

The spelling of 23420533 in words is "twenty-three million, four hundred twenty thousand, five hundred thirty-three".