1145253543 has 16 divisors (see below), whose sum is σ = 1774728960. Its totient is φ = 643337856.

The previous prime is 1145253509. The next prime is 1145253581. The reversal of 1145253543 is 3453525411.

It is not a de Polignac number, because 1145253543 - 2¹⁷ = 1145122471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145254543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460930 + ... + 463407.

It is an arithmetic number, because the mean of its divisors is an integer number (110920560).

Almost surely, 2^1145253543 is an apocalyptic number.

1145253543 is a deficient number, since it is larger than the sum of its proper divisors (629475417).

1145253543 is an equidigital number, since it uses as much as digits as its factorization.

1145253543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924406.

The product of its digits is 36000, while the sum is 33.

The square root of 1145253543 is about 33841.5948648996. The cubic root of 1145253543 is about 1046.2461703703.

Adding to 1145253543 its reverse (3453525411), we get a palindrome (4598778954).

The spelling of 1145253543 in words is "one billion, one hundred forty-five million, two hundred fifty-three thousand, five hundred forty-three".