1154543 has 4 divisors (see below), whose sum is σ = 1243368. Its totient is φ = 1065720.

The previous prime is 1154539. The next prime is 1154551. The reversal of 1154543 is 3454511.

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 1154543 - 2² = 1154539 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154513) 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, 44393 + ... + 44418.

It is an arithmetic number, because the mean of its divisors is an integer number (310842).

2^1154543 is an apocalyptic number.

1154543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1154543 is a deficient number, since it is larger than the sum of its proper divisors (88825).

1154543 is an equidigital number, since it uses as much as digits as its factorization.

1154543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88824.

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

The square root of 1154543 is about 1074.4966263325. The cubic root of 1154543 is about 104.9067350213.

Subtracting 1154543 from its reverse (3454511), we obtain a cube (2299968 = 132³).

The spelling of 1154543 in words is "one million, one hundred fifty-four thousand, five hundred forty-three".