172170701 has 2 divisors, whose sum is σ = 172170702. Its totient is φ = 172170700.

The previous prime is 172170697. The next prime is 172170703. The reversal of 172170701 is 107071271.

172170701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165148201 + 7022500 = 12851^2 + 2650^2 .

It is an emirp because it is prime and its reverse (107071271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172170701 - 2² = 172170697 is a prime.

Together with 172170703, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172170703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86085350 + 86085351.

It is an arithmetic number, because the mean of its divisors is an integer number (86085351).

Almost surely, 2^172170701 is an apocalyptic number.

It is an amenable number.

172170701 is a deficient number, since it is larger than the sum of its proper divisors (1).

172170701 is an equidigital number, since it uses as much as digits as its factorization.

172170701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 686, while the sum is 26.

The square root of 172170701 is about 13121.3833493272. The cubic root of 172170701 is about 556.3136923911.

The spelling of 172170701 in words is "one hundred seventy-two million, one hundred seventy thousand, seven hundred one".