1145543227 has 2 divisors, whose sum is σ = 1145543228. Its totient is φ = 1145543226.

The previous prime is 1145543209. The next prime is 1145543261. The reversal of 1145543227 is 7223455411.

It is an a-pointer prime, because the next prime (1145543261) can be obtained adding 1145543227 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145543227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1145543192 and 1145543201.

It is not a weakly prime, because it can be changed into another prime (1145543207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572771613 + 572771614.

It is an arithmetic number, because the mean of its divisors is an integer number (572771614).

Almost surely, 2^1145543227 is an apocalyptic number.

1145543227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145543227 is an equidigital number, since it uses as much as digits as its factorization.

1145543227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 34.

The square root of 1145543227 is about 33845.8745935158. The cubic root of 1145543227 is about 1046.3343765226.

Adding to 1145543227 its reverse (7223455411), we get a palindrome (8368998638).

The spelling of 1145543227 in words is "one billion, one hundred forty-five million, five hundred forty-three thousand, two hundred twenty-seven".