1145175285 has 8 divisors (see below), whose sum is σ = 1832280480. Its totient is φ = 610760144.

The previous prime is 1145175253. The next prime is 1145175289. The reversal of 1145175285 is 5825715411.

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

It is a cyclic number.

It is not a de Polignac number, because 1145175285 - 2⁵ = 1145175253 is a prime.

It is a super-2 number, since 2×1145175285² = 2622852866749662450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145175289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38172495 + ... + 38172524.

It is an arithmetic number, because the mean of its divisors is an integer number (229035060).

Almost surely, 2^1145175285 is an apocalyptic number.

1145175285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145175285 is a deficient number, since it is larger than the sum of its proper divisors (687105195).

1145175285 is an equidigital number, since it uses as much as digits as its factorization.

1145175285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76345027.

The product of its digits is 56000, while the sum is 39.

The square root of 1145175285 is about 33840.4386053136. The cubic root of 1145175285 is about 1046.2223389669. Note that the first 3 decimals are identical.

It can be divided in two parts, 11451 and 75285, that added together give a triangular number (86736 = T₄₁₆).

The spelling of 1145175285 in words is "one billion, one hundred forty-five million, one hundred seventy-five thousand, two hundred eighty-five".