12401533 has 2 divisors, whose sum is σ = 12401534. Its totient is φ = 12401532.

The previous prime is 12401507. The next prime is 12401537. The reversal of 12401533 is 33510421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6770404 + 5631129 = 2602^2 + 2373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12401533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12401533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12401537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200766 + 6200767.

It is an arithmetic number, because the mean of its divisors is an integer number (6200767).

Almost surely, 2^12401533 is an apocalyptic number.

It is an amenable number.

12401533 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401533 is an equidigital number, since it uses as much as digits as its factorization.

12401533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12401533 is about 3521.5810369776. The cubic root of 12401533 is about 231.4684434064.

Adding to 12401533 its reverse (33510421), we get a palindrome (45911954).

The spelling of 12401533 in words is "twelve million, four hundred one thousand, five hundred thirty-three".