1145520305 has 8 divisors (see below), whose sum is σ = 1375018944. Its totient is φ = 916153200.

The previous prime is 1145520283. The next prime is 1145520347. The reversal of 1145520305 is 5030255411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1145520305 - 2¹⁴ = 1145503921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12581 + ... + 49490.

It is an arithmetic number, because the mean of its divisors is an integer number (171877368).

Almost surely, 2^1145520305 is an apocalyptic number.

It is an amenable number.

1145520305 is a deficient number, since it is larger than the sum of its proper divisors (229498639).

1145520305 is an equidigital number, since it uses as much as digits as its factorization.

1145520305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65767.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1145520305 is about 33845.5359685735. The cubic root of 1145520305 is about 1046.3273975232.

Adding to 1145520305 its reverse (5030255411), we get a palindrome (6175775716).

The spelling of 1145520305 in words is "one billion, one hundred forty-five million, five hundred twenty thousand, three hundred five".