1145459171 has 4 divisors (see below), whose sum is σ = 1145623200. Its totient is φ = 1145295144.

The previous prime is 1145459143. The next prime is 1145459173. The reversal of 1145459171 is 1719545411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145459171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145459173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71051 + ... + 85668.

It is an arithmetic number, because the mean of its divisors is an integer number (286405800).

Almost surely, 2^1145459171 is an apocalyptic number.

1145459171 is a deficient number, since it is larger than the sum of its proper divisors (164029).

1145459171 is an equidigital number, since it uses as much as digits as its factorization.

1145459171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164028.

The product of its digits is 25200, while the sum is 38.

The square root of 1145459171 is about 33844.6328241274. The cubic root of 1145459171 is about 1046.3087837641.

The spelling of 1145459171 in words is "one billion, one hundred forty-five million, four hundred fifty-nine thousand, one hundred seventy-one".