172616017 has 4 divisors (see below), whose sum is σ = 197275456. Its totient is φ = 147956580.

The previous prime is 172615999. The next prime is 172616023. The reversal of 172616017 is 710616271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 710616271 = 67 ⋅10606213.

It is a cyclic number.

It is not a de Polignac number, because 172616017 - 2¹⁵ = 172583249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172616017.

It is not an unprimeable number, because it can be changed into a prime (172616417) 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 3 ways as a sum of consecutive naturals, for example, 12329709 + ... + 12329722.

It is an arithmetic number, because the mean of its divisors is an integer number (49318864).

Almost surely, 2^172616017 is an apocalyptic number.

It is an amenable number.

172616017 is a deficient number, since it is larger than the sum of its proper divisors (24659439).

172616017 is an equidigital number, since it uses as much as digits as its factorization.

172616017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24659438.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 172616017 is about 13138.3414858954. The cubic root of 172616017 is about 556.7929107980.

The spelling of 172616017 in words is "one hundred seventy-two million, six hundred sixteen thousand, seventeen".