1145265 has 24 divisors (see below), whose sum is σ = 2017344. Its totient is φ = 554400.

The previous prime is 1145227. The next prime is 1145269. The reversal of 1145265 is 5625411.

It is not a de Polignac number, because 1145265 - 2¹¹ = 1143217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145269) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1500 + ... + 2130.

It is an arithmetic number, because the mean of its divisors is an integer number (84056).

2^1145265 is an apocalyptic number.

1145265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145265 is a deficient number, since it is larger than the sum of its proper divisors (872079).

1145265 is a wasteful number, since it uses less digits than its factorization.

1145265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 650 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 1145265 is about 1070.1705471559. The cubic root of 1145265 is about 104.6249659205.

The spelling of 1145265 in words is "one million, one hundred forty-five thousand, two hundred sixty-five".