1355543 has 4 divisors (see below), whose sum is σ = 1549200. Its totient is φ = 1161888.

The previous prime is 1355533. The next prime is 1355573. The reversal of 1355543 is 3455531.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1355543 - 2¹⁸ = 1093399 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 (1355503) 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, 96818 + ... + 96831.

It is an arithmetic number, because the mean of its divisors is an integer number (387300).

2^1355543 is an apocalyptic number.

1355543 is a deficient number, since it is larger than the sum of its proper divisors (193657).

1355543 is an equidigital number, since it uses as much as digits as its factorization.

1355543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193656.

The product of its digits is 4500, while the sum is 26.

The square root of 1355543 is about 1164.2778877914. The cubic root of 1355543 is about 110.6720020089.

The spelling of 1355543 in words is "one million, three hundred fifty-five thousand, five hundred forty-three".