1013543 has 4 divisors (see below), whose sum is σ = 1017480. Its totient is φ = 1009608.

The previous prime is 1013533. The next prime is 1013563. The reversal of 1013543 is 3453101.

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 1013543 - 2⁴ = 1013527 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 (1013503) 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, 1553 + ... + 2106.

It is an arithmetic number, because the mean of its divisors is an integer number (254370).

2^1013543 is an apocalyptic number.

1013543 is a deficient number, since it is larger than the sum of its proper divisors (3937).

1013543 is an equidigital number, since it uses as much as digits as its factorization.

1013543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1013543 is about 1006.7487273396. The cubic root of 1013543 is about 100.4494106088.

Adding to 1013543 its reverse (3453101), we get a palindrome (4466644).

The spelling of 1013543 in words is "one million, thirteen thousand, five hundred forty-three".