15320017 has 2 divisors, whose sum is σ = 15320018. Its totient is φ = 15320016.

The previous prime is 15319981. The next prime is 15320051. The reversal of 15320017 is 71002351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10342656 + 4977361 = 3216^2 + 2231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15320017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15319976 and 15320003.

It is not a weakly prime, because it can be changed into another prime (15320917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7660008 + 7660009.

It is an arithmetic number, because the mean of its divisors is an integer number (7660009).

Almost surely, 2^15320017 is an apocalyptic number.

It is an amenable number.

15320017 is a deficient number, since it is larger than the sum of its proper divisors (1).

15320017 is an equidigital number, since it uses as much as digits as its factorization.

15320017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 15320017 is about 3914.0793298041. The cubic root of 15320017 is about 248.3627247267.

Adding to 15320017 its reverse (71002351), we get a palindrome (86322368).

The spelling of 15320017 in words is "fifteen million, three hundred twenty thousand, seventeen".