1145051345 has 4 divisors (see below), whose sum is σ = 1374061620. Its totient is φ = 916041072.

The previous prime is 1145051311. The next prime is 1145051353. The reversal of 1145051345 is 5431505411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5431505411 = 9109 ⋅596279.

It can be written as a sum of positive squares in 2 ways, for example, as 392317249 + 752734096 = 19807^2 + 27436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145051345 is a prime.

It is a super-3 number, since 3×1145051345³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 114505130 + ... + 114505139.

It is an arithmetic number, because the mean of its divisors is an integer number (343515405).

Almost surely, 2^1145051345 is an apocalyptic number.

It is an amenable number.

1145051345 is a deficient number, since it is larger than the sum of its proper divisors (229010275).

1145051345 is an equidigital number, since it uses as much as digits as its factorization.

1145051345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229010274.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1145051345 is about 33838.6073147226. The cubic root of 1145051345 is about 1046.1845940974.

Adding to 1145051345 its reverse (5431505411), we get a palindrome (6576556756).

The spelling of 1145051345 in words is "one billion, one hundred forty-five million, fifty-one thousand, three hundred forty-five".