172373101 has 2 divisors, whose sum is σ = 172373102. Its totient is φ = 172373100.

The previous prime is 172373099. The next prime is 172373177. The reversal of 172373101 is 101373271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172291876 + 81225 = 13126^2 + 285^2 .

It is an emirp because it is prime and its reverse (101373271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172373101 - 2¹ = 172373099 is a prime.

Together with 172373099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172373191) 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 as a sum of consecutive naturals, namely, 86186550 + 86186551.

It is an arithmetic number, because the mean of its divisors is an integer number (86186551).

Almost surely, 2^172373101 is an apocalyptic number.

It is an amenable number.

172373101 is a deficient number, since it is larger than the sum of its proper divisors (1).

172373101 is an equidigital number, since it uses as much as digits as its factorization.

172373101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 172373101 is about 13129.0936853996. The cubic root of 172373101 is about 556.5316036404.

The spelling of 172373101 in words is "one hundred seventy-two million, three hundred seventy-three thousand, one hundred one".