172243 has 2 divisors, whose sum is σ = 172244. Its totient is φ = 172242.

The previous prime is 172223. The next prime is 172259. The reversal of 172243 is 342271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172243 - 2¹³ = 164051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172243.

It is not a weakly prime, because it can be changed into another prime (172213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86121 + 86122.

It is an arithmetic number, because the mean of its divisors is an integer number (86122).

2¹⁷²²⁴³ is an apocalyptic number.

172243 is a deficient number, since it is larger than the sum of its proper divisors (1).

172243 is an equidigital number, since it uses as much as digits as its factorization.

172243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 19.

The square root of 172243 is about 415.0216861804. The cubic root of 172243 is about 55.6391551738.

The spelling of 172243 in words is "one hundred seventy-two thousand, two hundred forty-three", and thus it is an iban number.