1712517121 has 6 divisors (see below), whose sum is σ = 1992111810. Its totient is φ = 1467871776.

The previous prime is 1712517071. The next prime is 1712517133. The reversal of 1712517121 is 1217152171.

It can be written as a sum of positive squares in only one way, i.e., 1138387600 + 574129521 = 33740^2 + 23961^2 .

It is not a de Polignac number, because 1712517121 - 2⁹ = 1712516609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1712517121.

It is not an unprimeable number, because it can be changed into a prime (1712517181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17474616 + ... + 17474713.

It is an arithmetic number, because the mean of its divisors is an integer number (332018635).

Almost surely, 2^1712517121 is an apocalyptic number.

It is an amenable number.

1712517121 is a deficient number, since it is larger than the sum of its proper divisors (279594689).

1712517121 is an equidigital number, since it uses as much as digits as its factorization.

1712517121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34949343 (or 34949336 counting only the distinct ones).

The product of its digits is 980, while the sum is 28.

The square root of 1712517121 is about 41382.5702560873. The cubic root of 1712517121 is about 1196.4052424160.

Adding to 1712517121 its reverse (1217152171), we get a palindrome (2929669292).

The spelling of 1712517121 in words is "one billion, seven hundred twelve million, five hundred seventeen thousand, one hundred twenty-one".