12305533 has 2 divisors, whose sum is σ = 12305534. Its totient is φ = 12305532.

The previous prime is 12305509. The next prime is 12305539. The reversal of 12305533 is 33550321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8514724 + 3790809 = 2918^2 + 1947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12305533 is a prime.

It is a super-2 number, since 2×12305533² = 302852284828178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12305539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6152766 + 6152767.

It is an arithmetic number, because the mean of its divisors is an integer number (6152767).

Almost surely, 2^12305533 is an apocalyptic number.

It is an amenable number.

12305533 is a deficient number, since it is larger than the sum of its proper divisors (1).

12305533 is an equidigital number, since it uses as much as digits as its factorization.

12305533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 12305533 is about 3507.9243150330. The cubic root of 12305533 is about 230.8696315288.

Adding to 12305533 its reverse (33550321), we get a palindrome (45855854).

The spelling of 12305533 in words is "twelve million, three hundred five thousand, five hundred thirty-three".