1151543 has 4 divisors (see below), whose sum is σ = 1153848. Its totient is φ = 1149240.

The previous prime is 1151537. The next prime is 1151569. The reversal of 1151543 is 3451511.

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 1151543 - 2⁸ = 1151287 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 (1151593) 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, 53 + ... + 1518.

It is an arithmetic number, because the mean of its divisors is an integer number (288462).

2^1151543 is an apocalyptic number.

1151543 is a deficient number, since it is larger than the sum of its proper divisors (2305).

1151543 is an equidigital number, since it uses as much as digits as its factorization.

1151543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304.

The product of its digits is 300, while the sum is 20.

The square root of 1151543 is about 1073.0997157767. The cubic root of 1151543 is about 104.8157919116.

Subtracting 1151543 from its reverse (3451511), we obtain a cube (2299968 = 132³).

The spelling of 1151543 in words is "one million, one hundred fifty-one thousand, five hundred forty-three".