445222 has 16 divisors (see below), whose sum is σ = 709632. Its totient is φ = 209160.

The previous prime is 445199. The next prime is 445229. The reversal of 445222 is 222544.

It is a self number, because there is not a number n which added to its sum of digits gives 445222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2583 + ... + 2749.

It is an arithmetic number, because the mean of its divisors is an integer number (44352).

2⁴⁴⁵²²² is an apocalyptic number.

445222 is the 334-th decagonal number.

445222 is a deficient number, since it is larger than the sum of its proper divisors (264410).

445222 is a wasteful number, since it uses less digits than its factorization.

445222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243.

The product of its digits is 640, while the sum is 19.

The square root of 445222 is about 667.2495784937. The cubic root of 445222 is about 76.3587608548.

Adding to 445222 its reverse (222544), we get a palindrome (667766).

It can be divided in two parts, 445 and 222, that multiplied together give a triangular number (98790 = T₄₄₄).

The spelling of 445222 in words is "four hundred forty-five thousand, two hundred twenty-two".