13581433 has 2 divisors, whose sum is σ = 13581434. Its totient is φ = 13581432.

The previous prime is 13581427. The next prime is 13581457. The reversal of 13581433 is 33418531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13307904 + 273529 = 3648^2 + 523^2 .

It is a cyclic number.

It is not a de Polignac number, because 13581433 - 2⁹ = 13580921 is a prime.

It is not a weakly prime, because it can be changed into another prime (13581413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6790716 + 6790717.

It is an arithmetic number, because the mean of its divisors is an integer number (6790717).

Almost surely, 2^13581433 is an apocalyptic number.

It is an amenable number.

13581433 is a deficient number, since it is larger than the sum of its proper divisors (1).

13581433 is an equidigital number, since it uses as much as digits as its factorization.

13581433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 13581433 is about 3685.2995807668. The cubic root of 13581433 is about 238.5879643941.

Adding to 13581433 its reverse (33418531), we get a palindrome (46999964).

The spelling of 13581433 in words is "thirteen million, five hundred eighty-one thousand, four hundred thirty-three".