1145441545 has 4 divisors (see below), whose sum is σ = 1374529860. Its totient is φ = 916353232.

The previous prime is 1145441513. The next prime is 1145441567. The reversal of 1145441545 is 5451445411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5451445411 = 18119 ⋅300869.

It can be written as a sum of positive squares in 2 ways, for example, as 124255609 + 1021185936 = 11147^2 + 31956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145441545 - 2⁵ = 1145441513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1145441545.

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, 114544150 + ... + 114544159.

It is an arithmetic number, because the mean of its divisors is an integer number (343632465).

Almost surely, 2^1145441545 is an apocalyptic number.

It is an amenable number.

1145441545 is a deficient number, since it is larger than the sum of its proper divisors (229088315).

1145441545 is an equidigital number, since it uses as much as digits as its factorization.

1145441545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229088314.

The product of its digits is 32000, while the sum is 34.

The square root of 1145441545 is about 33844.3724273327. The cubic root of 1145441545 is about 1046.3034169692.

Adding to 1145441545 its reverse (5451445411), we get a palindrome (6596886956).

The spelling of 1145441545 in words is "one billion, one hundred forty-five million, four hundred forty-one thousand, five hundred forty-five".