172222 has 4 divisors (see below), whose sum is σ = 258336.
Its totient is φ = 86110.
The previous prime is 172219. The next prime is 172223. The reversal of 172222 is 222271.
Adding to 172222 its reverse (222271), we get a palindrome (394493).
172222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
172222 is a modest number, since divided by 222 gives 172 as remainder.
It is a junction number, because it is equal to n+sod(n) for n = 172196 and 172205.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (172223) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43054 + ... + 43057.
It is an arithmetic number, because the mean of its divisors is an integer number (64584).
2172222 is an apocalyptic number.
172222 is a deficient number, since it is larger than the sum of its proper divisors (86114).
172222 is an equidigital number, since it uses as much as digits as its factorization.
172222 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 86113.
The product of its digits is 112, while the sum is 16.
The square root of 172222 is about 414.9963855264.
The cubic root of 172222 is about 55.6368938923.
The spelling of 172222 in words is "one hundred seventy-two thousand, two hundred twenty-two", and thus it is an iban number.