15985133 has 2 divisors, whose sum is σ = 15985134. Its totient is φ = 15985132.

The previous prime is 15985127. The next prime is 15985141. The reversal of 15985133 is 33158951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13118884 + 2866249 = 3622^2 + 1693^2 .

It is a cyclic number.

It is not a de Polignac number, because 15985133 - 2¹⁸ = 15722989 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 15985093 and 15985102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15985163) 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, 7992566 + 7992567.

It is an arithmetic number, because the mean of its divisors is an integer number (7992567).

Almost surely, 2^15985133 is an apocalyptic number.

It is an amenable number.

15985133 is a deficient number, since it is larger than the sum of its proper divisors (1).

15985133 is an equidigital number, since it uses as much as digits as its factorization.

15985133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 15985133 is about 3998.1411931046. The cubic root of 15985133 is about 251.9061389337.

The spelling of 15985133 in words is "fifteen million, nine hundred eighty-five thousand, one hundred thirty-three".