1145055305 has 4 divisors (see below), whose sum is σ = 1374066372. Its totient is φ = 916044240.

The previous prime is 1145055287. The next prime is 1145055319. The reversal of 1145055305 is 5035505411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119006281 + 1026049024 = 10909^2 + 32032^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1145055305 is a prime.

It is a super-2 number, since 2×1145055305² = 2622303303017286050, which contains 22 as substring.

It is a Duffinian number.

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, 114505526 + ... + 114505535.

It is an arithmetic number, because the mean of its divisors is an integer number (343516593).

Almost surely, 2^1145055305 is an apocalyptic number.

It is an amenable number.

1145055305 is a deficient number, since it is larger than the sum of its proper divisors (229011067).

1145055305 is an equidigital number, since it uses as much as digits as its factorization.

1145055305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229011066.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1145055305 is about 33838.6658277184. The cubic root of 1145055305 is about 1046.1858001237.

The spelling of 1145055305 in words is "one billion, one hundred forty-five million, fifty-five thousand, three hundred five".