1224533245 has 8 divisors (see below), whose sum is σ = 1582473816. Its totient is φ = 904270656.

The previous prime is 1224533227. The next prime is 1224533249. The reversal of 1224533245 is 5423354221.

It can be written as a sum of positive squares in 4 ways, for example, as 1352569 + 1223180676 = 1163^2 + 34974^2 .

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 1224533245 - 2⁵ = 1224533213 is a prime.

It is a super-2 number, since 2×1224533245² = 2998963336220460050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224533249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9419422 + ... + 9419551.

It is an arithmetic number, because the mean of its divisors is an integer number (197809227).

Almost surely, 2^1224533245 is an apocalyptic number.

It is an amenable number.

1224533245 is a deficient number, since it is larger than the sum of its proper divisors (357940571).

1224533245 is a wasteful number, since it uses less digits than its factorization.

1224533245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18838991.

The product of its digits is 28800, while the sum is 31.

The square root of 1224533245 is about 34993.3314361465. The cubic root of 1224533245 is about 1069.8515661568.

Adding to 1224533245 its reverse (5423354221), we get a palindrome (6647887466).

The spelling of 1224533245 in words is "one billion, two hundred twenty-four million, five hundred thirty-three thousand, two hundred forty-five".