15070217 has 2 divisors, whose sum is σ = 15070218. Its totient is φ = 15070216.

The previous prime is 15070199. The next prime is 15070219. The reversal of 15070217 is 71207051.

It is a happy number.

15070217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10863616 + 4206601 = 3296^2 + 2051^2 .

It is an emirp because it is prime and its reverse (71207051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15070217 - 2²² = 10875913 is a prime.

It is a super-2 number, since 2×15070217² = 454222880854178, which contains 22 as substring.

Together with 15070219, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 15070192 and 15070201.

It is not a weakly prime, because it can be changed into another prime (15070219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7535108 + 7535109.

It is an arithmetic number, because the mean of its divisors is an integer number (7535109).

Almost surely, 2^15070217 is an apocalyptic number.

It is an amenable number.

15070217 is a deficient number, since it is larger than the sum of its proper divisors (1).

15070217 is an equidigital number, since it uses as much as digits as its factorization.

15070217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 15070217 is about 3882.0377380958. The cubic root of 15070217 is about 247.0054307733.

Adding to 15070217 its reverse (71207051), we get a palindrome (86277268).

The spelling of 15070217 in words is "fifteen million, seventy thousand, two hundred seventeen".