172117465 has 16 divisors (see below), whose sum is σ = 230101200. Its totient is φ = 122717952.

The previous prime is 172117459. The next prime is 172117471. The reversal of 172117465 is 564711271.

It is an interprime number because it is at equal distance from previous prime (172117459) and next prime (172117471).

It can be written as a sum of positive squares in 8 ways, for example, as 55995289 + 116122176 = 7483^2 + 10776^2 .

It is a cyclic number.

It is not a de Polignac number, because 172117465 - 2²¹ = 170020313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172117465.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 43770 + ... + 47539.

It is an arithmetic number, because the mean of its divisors is an integer number (14381325).

Almost surely, 2^172117465 is an apocalyptic number.

It is an amenable number.

172117465 is a deficient number, since it is larger than the sum of its proper divisors (57983735).

172117465 is a wasteful number, since it uses less digits than its factorization.

172117465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91356.

The product of its digits is 11760, while the sum is 34.

The square root of 172117465 is about 13119.3545954060. The cubic root of 172117465 is about 556.2563482001.

The spelling of 172117465 in words is "one hundred seventy-two million, one hundred seventeen thousand, four hundred sixty-five".