145223224 has 16 divisors (see below), whose sum is σ = 279653400. Its totient is φ = 70648992.

The previous prime is 145223203. The next prime is 145223257. The reversal of 145223224 is 422322541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245014 + ... + 245605.

Almost surely, 2^145223224 is an apocalyptic number.

It is an amenable number.

145223224 is a deficient number, since it is larger than the sum of its proper divisors (134430176).

145223224 is a wasteful number, since it uses less digits than its factorization.

145223224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490662 (or 490658 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 145223224 is about 12050.8598863318. The cubic root of 145223224 is about 525.6282414145.

Adding to 145223224 its reverse (422322541), we get a palindrome (567545765).

The spelling of 145223224 in words is "one hundred forty-five million, two hundred twenty-three thousand, two hundred twenty-four".