17228971 has 2 divisors, whose sum is σ = 17228972. Its totient is φ = 17228970.

The previous prime is 17228969. The next prime is 17228977. The reversal of 17228971 is 17982271.

It is a weak prime.

It is an emirp because it is prime and its reverse (17982271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17228971 - 2¹ = 17228969 is a prime.

Together with 17228969, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 17228971.

It is not a weakly prime, because it can be changed into another prime (17228977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8614485 + 8614486.

It is an arithmetic number, because the mean of its divisors is an integer number (8614486).

Almost surely, 2^17228971 is an apocalyptic number.

17228971 is a deficient number, since it is larger than the sum of its proper divisors (1).

17228971 is an equidigital number, since it uses as much as digits as its factorization.

17228971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 37.

The square root of 17228971 is about 4150.7795653347. The cubic root of 17228971 is about 258.2774242751.

The spelling of 17228971 in words is "seventeen million, two hundred twenty-eight thousand, nine hundred seventy-one".