17121073 has 8 divisors (see below), whose sum is σ = 17328168. Its totient is φ = 16915584.

The previous prime is 17121061. The next prime is 17121077. The reversal of 17121073 is 37012171.

It can be written as a sum of positive squares in 4 ways, for example, as 5094049 + 12027024 = 2257^2 + 3468^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17121073 is a prime.

It is a super-2 number, since 2×17121073² = 586262281342658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17121077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45715 + ... + 46087.

It is an arithmetic number, because the mean of its divisors is an integer number (2166021).

Almost surely, 2^17121073 is an apocalyptic number.

It is an amenable number.

17121073 is a deficient number, since it is larger than the sum of its proper divisors (207095).

17121073 is a wasteful number, since it uses less digits than its factorization.

17121073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 17121073 is about 4137.7618346154. The cubic root of 17121073 is about 257.7371328618.

The spelling of 17121073 in words is "seventeen million, one hundred twenty-one thousand, seventy-three".