171117513 has 24 divisors (see below), whose sum is σ = 283920000. Its totient is φ = 97282944.

The previous prime is 171117509. The next prime is 171117517. The reversal of 171117513 is 315711171.

It is an interprime number because it is at equal distance from previous prime (171117509) and next prime (171117517).

It is not a de Polignac number, because 171117513 - 2² = 171117509 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (171117517) 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 in 23 ways as a sum of consecutive naturals, for example, 5713 + ... + 19361.

It is an arithmetic number, because the mean of its divisors is an integer number (11830000).

Almost surely, 2^171117513 is an apocalyptic number.

It is an amenable number.

171117513 is a deficient number, since it is larger than the sum of its proper divisors (112802487).

171117513 is a wasteful number, since it uses less digits than its factorization.

171117513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13861 (or 13858 counting only the distinct ones).

The product of its digits is 735, while the sum is 27.

The square root of 171117513 is about 13081.1892807955. The cubic root of 171117513 is about 555.1770265574.

Adding to 171117513 its reverse (315711171), we get a palindrome (486828684).

The spelling of 171117513 in words is "one hundred seventy-one million, one hundred seventeen thousand, five hundred thirteen".