1224455 has 8 divisors (see below), whose sum is σ = 1546800. Its totient is φ = 927936.

The previous prime is 1224439. The next prime is 1224473. The reversal of 1224455 is 5544221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1224455 - 2⁴ = 1224439 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1224455.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 6350 + ... + 6539.

It is an arithmetic number, because the mean of its divisors is an integer number (193350).

2^1224455 is an apocalyptic number.

1224455 is a deficient number, since it is larger than the sum of its proper divisors (322345).

1224455 is a wasteful number, since it uses less digits than its factorization.

1224455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12913.

The product of its digits is 1600, while the sum is 23.

The square root of 1224455 is about 1106.5509477652. The cubic root of 1224455 is about 106.9828778612.

Adding to 1224455 its reverse (5544221), we get a palindrome (6768676).

The spelling of 1224455 in words is "one million, two hundred twenty-four thousand, four hundred fifty-five".