1152543 has 16 divisors (see below), whose sum is σ = 1783296. Its totient is φ = 648480.

The previous prime is 1152527. The next prime is 1152589. The reversal of 1152543 is 3452511.

It is not a de Polignac number, because 1152543 - 2⁴ = 1152527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152523) 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 15 ways as a sum of consecutive naturals, for example, 1105 + ... + 1877.

It is an arithmetic number, because the mean of its divisors is an integer number (111456).

2^1152543 is an apocalyptic number.

1152543 is a deficient number, since it is larger than the sum of its proper divisors (630753).

1152543 is an equidigital number, since it uses as much as digits as its factorization.

1152543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854.

The product of its digits is 600, while the sum is 21.

The square root of 1152543 is about 1073.5655545890. The cubic root of 1152543 is about 104.8461238129.

Multiplying 1152543 by its sum of digits (21), we get a triangular number (24203403 = T₆₉₅₇).

Subtracting 1152543 from its reverse (3452511), we obtain a cube (2299968 = 132³).

The spelling of 1152543 in words is "one million, one hundred fifty-two thousand, five hundred forty-three".