15985141 has 2 divisors, whose sum is σ = 15985142. Its totient is φ = 15985140.

The previous prime is 15985133. The next prime is 15985157. The reversal of 15985141 is 14158951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8532241 + 7452900 = 2921^2 + 2730^2 .

It is a cyclic number.

It is not a de Polignac number, because 15985141 - 2³ = 15985133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15985097 and 15985106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15985241) 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, 7992570 + 7992571.

It is an arithmetic number, because the mean of its divisors is an integer number (7992571).

Almost surely, 2^15985141 is an apocalyptic number.

It is an amenable number.

15985141 is a deficient number, since it is larger than the sum of its proper divisors (1).

15985141 is an equidigital number, since it uses as much as digits as its factorization.

15985141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 34.

The square root of 15985141 is about 3998.1421935694. The cubic root of 15985141 is about 251.9061809571.

The spelling of 15985141 in words is "fifteen million, nine hundred eighty-five thousand, one hundred forty-one".