172222373 has 2 divisors, whose sum is σ = 172222374. Its totient is φ = 172222372.

The previous prime is 172222339. The next prime is 172222399. The reversal of 172222373 is 373222271.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170485249 + 1737124 = 13057^2 + 1318^2 .

It is a cyclic number.

It is not a de Polignac number, because 172222373 - 2⁸ = 172222117 is a prime.

It is a super-2 number, since 2×172222373² = 59321091523502258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172222313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86111186 + 86111187.

It is an arithmetic number, because the mean of its divisors is an integer number (86111187).

Almost surely, 2^172222373 is an apocalyptic number.

It is an amenable number.

172222373 is a deficient number, since it is larger than the sum of its proper divisors (1).

172222373 is an equidigital number, since it uses as much as digits as its factorization.

172222373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 29.

The square root of 172222373 is about 13123.3522013242. The cubic root of 172222373 is about 556.3693405854.

The spelling of 172222373 in words is "one hundred seventy-two million, two hundred twenty-two thousand, three hundred seventy-three".