1224355 has 16 divisors (see below), whose sum is σ = 1625184. Its totient is φ = 878080.

The previous prime is 1224347. The next prime is 1224389. The reversal of 1224355 is 5534221.

It is not a de Polignac number, because 1224355 - 2³ = 1224347 is a prime.

1224355 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6117 + ... + 6313.

It is an arithmetic number, because the mean of its divisors is an integer number (101574).

2^1224355 is an apocalyptic number.

1224355 is a deficient number, since it is larger than the sum of its proper divisors (400829).

1224355 is a wasteful number, since it uses less digits than its factorization.

1224355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326.

The product of its digits is 1200, while the sum is 22.

The square root of 1224355 is about 1106.5057613949. The cubic root of 1224355 is about 106.9799653875.

Adding to 1224355 its reverse (5534221), we get a palindrome (6758576).

The spelling of 1224355 in words is "one million, two hundred twenty-four thousand, three hundred fifty-five".