1145452523 has 4 divisors (see below), whose sum is σ = 1145536560. Its totient is φ = 1145368488.

The previous prime is 1145452519. The next prime is 1145452531. The reversal of 1145452523 is 3252545411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1145452523 - 2² = 1145452519 is a prime.

It is a super-2 number, since 2×1145452523² = 2624122964894131058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145452523.

It is not an unprimeable number, because it can be changed into a prime (1145452513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16343 + ... + 50576.

It is an arithmetic number, because the mean of its divisors is an integer number (286384140).

Almost surely, 2^1145452523 is an apocalyptic number.

1145452523 is a deficient number, since it is larger than the sum of its proper divisors (84037).

1145452523 is an equidigital number, since it uses as much as digits as its factorization.

1145452523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84036.

The product of its digits is 24000, while the sum is 32.

The square root of 1145452523 is about 33844.5346104803. The cubic root of 1145452523 is about 1046.3067595760.

Adding to 1145452523 its reverse (3252545411), we get a palindrome (4397997934).

The spelling of 1145452523 in words is "one billion, one hundred forty-five million, four hundred fifty-two thousand, five hundred twenty-three".