1145543 has 8 divisors (see below), whose sum is σ = 1351680. Its totient is φ = 950040.

The previous prime is 1145539. The next prime is 1145593. The reversal of 1145543 is 3455411.

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

It is not a de Polignac number, because 1145543 - 2² = 1145539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145533) 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, 2423 + ... + 2856.

It is an arithmetic number, because the mean of its divisors is an integer number (168960).

2^1145543 is an apocalyptic number.

1145543 is a deficient number, since it is larger than the sum of its proper divisors (206137).

1145543 is an equidigital number, since it uses as much as digits as its factorization.

1145543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317.

The product of its digits is 1200, while the sum is 23.

The square root of 1145543 is about 1070.3004251144. The cubic root of 1145543 is about 104.6334307409.

It can be divided in two parts, 11 and 45543, that added together give a palindrome (45554).

The spelling of 1145543 in words is "one million, one hundred forty-five thousand, five hundred forty-three".