172608229 has 2 divisors, whose sum is σ = 172608230. Its totient is φ = 172608228.

The previous prime is 172608197. The next prime is 172608239. The reversal of 172608229 is 922806271.

172608229 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., 171557604 + 1050625 = 13098^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 172608229 - 2⁵ = 172608197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172608239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86304114 + 86304115.

It is an arithmetic number, because the mean of its divisors is an integer number (86304115).

Almost surely, 2^172608229 is an apocalyptic number.

It is an amenable number.

172608229 is a deficient number, since it is larger than the sum of its proper divisors (1).

172608229 is an equidigital number, since it uses as much as digits as its factorization.

172608229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 172608229 is about 13138.0450981111. The cubic root of 172608229 is about 556.7845369740.

The spelling of 172608229 in words is "one hundred seventy-two million, six hundred eight thousand, two hundred twenty-nine".