145222 has 32 divisors (see below), whose sum is σ = 290304. Its totient is φ = 52800.

The previous prime is 145219. The next prime is 145253. The reversal of 145222 is 222541.

145222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 145196 and 145205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3522 + ... + 3562.

It is an arithmetic number, because the mean of its divisors is an integer number (9072).

2¹⁴⁵²²² is an apocalyptic number.

145222 is a deficient number, since it is larger than the sum of its proper divisors (145082).

145222 is a wasteful number, since it uses less digits than its factorization.

145222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84.

The product of its digits is 160, while the sum is 16.

The square root of 145222 is about 381.0800440852. The cubic root of 145222 is about 52.5626764675.

Adding to 145222 its reverse (222541), we get a palindrome (367763).

The spelling of 145222 in words is "one hundred forty-five thousand, two hundred twenty-two".