172253239 has 2 divisors, whose sum is σ = 172253240. Its totient is φ = 172253238.

The previous prime is 172253161. The next prime is 172253287. The reversal of 172253239 is 932352271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172253239 - 2¹⁵ = 172220471 is a prime.

It is a super-2 number, since 2×172253239² = 59342356691982242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172251239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86126619 + 86126620.

It is an arithmetic number, because the mean of its divisors is an integer number (86126620).

Almost surely, 2^172253239 is an apocalyptic number.

172253239 is a deficient number, since it is larger than the sum of its proper divisors (1).

172253239 is an equidigital number, since it uses as much as digits as its factorization.

172253239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 172253239 is about 13124.5281438991. The cubic root of 172253239 is about 556.4025764342.

The spelling of 172253239 in words is "one hundred seventy-two million, two hundred fifty-three thousand, two hundred thirty-nine".