172393271 has 2 divisors, whose sum is σ = 172393272. Its totient is φ = 172393270.

The previous prime is 172393253. The next prime is 172393283.

172393271 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 172393271 - 2¹⁰ = 172392247 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172393231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86196635 + 86196636.

It is an arithmetic number, because the mean of its divisors is an integer number (86196636).

Almost surely, 2^172393271 is an apocalyptic number.

172393271 is a deficient number, since it is larger than the sum of its proper divisors (1).

172393271 is an equidigital number, since it uses as much as digits as its factorization.

172393271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 35.

The square root of 172393271 is about 13129.8618042994. The cubic root of 172393271 is about 556.5533100524.

The spelling of 172393271 in words is "one hundred seventy-two million, three hundred ninety-three thousand, two hundred seventy-one".