1145543212 has 48 divisors (see below), whose sum is σ = 2325012480. Its totient is φ = 488376000.

The previous prime is 1145543209. The next prime is 1145543227. The reversal of 1145543212 is 2123455411.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77653 + ... + 91219.

It is an arithmetic number, because the mean of its divisors is an integer number (48437760).

Almost surely, 2^1145543212 is an apocalyptic number.

It is an amenable number.

1145543212 is an abundant number, since it is smaller than the sum of its proper divisors (1179469268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145543212 is a wasteful number, since it uses less digits than its factorization.

1145543212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13702 (or 13700 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 1145543212 is about 33845.8743719231. The cubic root of 1145543212 is about 1046.3343719556.

Adding to 1145543212 its reverse (2123455411), we get a palindrome (3268998623).

The spelling of 1145543212 in words is "one billion, one hundred forty-five million, five hundred forty-three thousand, two hundred twelve".