172623233 has 2 divisors, whose sum is σ = 172623234. Its totient is φ = 172623232.

The previous prime is 172623197. The next prime is 172623259. The reversal of 172623233 is 332326271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95394289 + 77228944 = 9767^2 + 8788^2 .

It is a cyclic number.

It is not a de Polignac number, because 172623233 - 2⁸ = 172622977 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 172623196 and 172623205.

It is not a weakly prime, because it can be changed into another prime (172623263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86311616 + 86311617.

It is an arithmetic number, because the mean of its divisors is an integer number (86311617).

Almost surely, 2^172623233 is an apocalyptic number.

It is an amenable number.

172623233 is a deficient number, since it is larger than the sum of its proper divisors (1).

172623233 is an equidigital number, since it uses as much as digits as its factorization.

172623233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 29.

The square root of 172623233 is about 13138.6160991179. The cubic root of 172623233 is about 556.8006693705.

The spelling of 172623233 in words is "one hundred seventy-two million, six hundred twenty-three thousand, two hundred thirty-three".