172271417 has 2 divisors, whose sum is σ = 172271418. Its totient is φ = 172271416.

The previous prime is 172271399. The next prime is 172271441. The reversal of 172271417 is 714172271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172239376 + 32041 = 13124^2 + 179^2 .

It is an emirp because it is prime and its reverse (714172271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172271417 - 2¹⁸ = 172009273 is a prime.

It is a super-2 number, since 2×172271417² = 59354882230375778, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172271467) 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, 86135708 + 86135709.

It is an arithmetic number, because the mean of its divisors is an integer number (86135709).

Almost surely, 2^172271417 is an apocalyptic number.

It is an amenable number.

172271417 is a deficient number, since it is larger than the sum of its proper divisors (1).

172271417 is an equidigital number, since it uses as much as digits as its factorization.

172271417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5488, while the sum is 32.

The square root of 172271417 is about 13125.2206457644. The cubic root of 172271417 is about 556.4221482583.

The spelling of 172271417 in words is "one hundred seventy-two million, two hundred seventy-one thousand, four hundred seventeen".