15982117 has 2 divisors, whose sum is σ = 15982118. Its totient is φ = 15982116.

The previous prime is 15982049. The next prime is 15982121. The reversal of 15982117 is 71128951.

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., 8767521 + 7214596 = 2961^2 + 2686^2 .

It is a cyclic number.

It is not a de Polignac number, because 15982117 - 2¹⁹ = 15457829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15982147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7991058 + 7991059.

It is an arithmetic number, because the mean of its divisors is an integer number (7991059).

Almost surely, 2^15982117 is an apocalyptic number.

It is an amenable number.

15982117 is a deficient number, since it is larger than the sum of its proper divisors (1).

15982117 is an equidigital number, since it uses as much as digits as its factorization.

15982117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 34.

The square root of 15982117 is about 3997.7640000380. The cubic root of 15982117 is about 251.8902951139.

The spelling of 15982117 in words is "fifteen million, nine hundred eighty-two thousand, one hundred seventeen".