172838273 has 2 divisors, whose sum is σ = 172838274. Its totient is φ = 172838272.

The previous prime is 172838249. The next prime is 172838279. The reversal of 172838273 is 372838271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117007489 + 55830784 = 10817^2 + 7472^2 .

It is a cyclic number.

It is not a de Polignac number, because 172838273 - 2⁶ = 172838209 is a prime.

It is a super-2 number, since 2×172838273² = 59746137227245058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172838273.

It is not a weakly prime, because it can be changed into another prime (172838279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86419136 + 86419137.

It is an arithmetic number, because the mean of its divisors is an integer number (86419137).

Almost surely, 2^172838273 is an apocalyptic number.

It is an amenable number.

172838273 is a deficient number, since it is larger than the sum of its proper divisors (1).

172838273 is an equidigital number, since it uses as much as digits as its factorization.

172838273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 172838273 is about 13146.7970624027. The cubic root of 172838273 is about 557.0317791112.

The spelling of 172838273 in words is "one hundred seventy-two million, eight hundred thirty-eight thousand, two hundred seventy-three".