1145347 has 4 divisors (see below), whose sum is σ = 1308976. Its totient is φ = 981720.

The previous prime is 1145329. The next prime is 1145359. The reversal of 1145347 is 7435411.

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

It is a cyclic number.

It is not a de Polignac number, because 1145347 - 2¹¹ = 1143299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81804 + ... + 81817.

It is an arithmetic number, because the mean of its divisors is an integer number (327244).

2^1145347 is an apocalyptic number.

1145347 is a deficient number, since it is larger than the sum of its proper divisors (163629).

1145347 is an equidigital number, since it uses as much as digits as its factorization.

1145347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163628.

The product of its digits is 1680, while the sum is 25.

The square root of 1145347 is about 1070.2088581207. The cubic root of 1145347 is about 104.6274628805.

Subtracting 1145347 from its reverse (7435411), we obtain a square (6290064 = 2508²).

The spelling of 1145347 in words is "one million, one hundred forty-five thousand, three hundred forty-seven".