1224324545 has 4 divisors (see below), whose sum is σ = 1469189460. Its totient is φ = 979459632.

The previous prime is 1224324511. The next prime is 1224324557. The reversal of 1224324545 is 5454234221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5454234221 = 19 ⋅287064959.

It can be written as a sum of positive squares in 2 ways, for example, as 383846464 + 840478081 = 19592^2 + 28991^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224324545 - 2⁶ = 1224324481 is a prime.

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, 122432450 + ... + 122432459.

It is an arithmetic number, because the mean of its divisors is an integer number (367297365).

Almost surely, 2^1224324545 is an apocalyptic number.

It is an amenable number.

1224324545 is a deficient number, since it is larger than the sum of its proper divisors (244864915).

1224324545 is an equidigital number, since it uses as much as digits as its factorization.

1224324545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244864914.

The product of its digits is 38400, while the sum is 32.

The square root of 1224324545 is about 34990.3493123461. The cubic root of 1224324545 is about 1069.7907836209.

Adding to 1224324545 its reverse (5454234221), we get a palindrome (6678558766).

The spelling of 1224324545 in words is "one billion, two hundred twenty-four million, three hundred twenty-four thousand, five hundred forty-five".