1145745 has 48 divisors (see below), whose sum is σ = 2201472. Its totient is φ = 570240.

The previous prime is 1145743. The next prime is 1145747. The reversal of 1145745 is 5475411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1145743) and next prime (1145747).

It is not a de Polignac number, because 1145745 - 2¹ = 1145743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1145741) 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 47 ways as a sum of consecutive naturals, for example, 27925 + ... + 27965.

It is an arithmetic number, because the mean of its divisors is an integer number (45864).

2^1145745 is an apocalyptic number.

1145745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145745 is a deficient number, since it is larger than the sum of its proper divisors (1055727).

1145745 is an equidigital number, since it uses as much as digits as its factorization.

1145745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 72 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 1145745 is about 1070.3947869828. The cubic root of 1145745 is about 104.6395805787.

The spelling of 1145745 in words is "one million, one hundred forty-five thousand, seven hundred forty-five".