802543 has 4 divisors (see below), whose sum is σ = 917200. Its totient is φ = 687888.

The previous prime is 802531. The next prime is 802573. The reversal of 802543 is 345208.

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 802543 - 2⁵ = 802511 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802523) 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, 57318 + ... + 57331.

It is an arithmetic number, because the mean of its divisors is an integer number (229300).

2⁸⁰²⁵⁴³ is an apocalyptic number.

802543 is a deficient number, since it is larger than the sum of its proper divisors (114657).

802543 is a wasteful number, since it uses less digits than its factorization.

802543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114656.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 802543 is about 895.8476432966. The cubic root of 802543 is about 92.9300356355.

The spelling of 802543 in words is "eight hundred two thousand, five hundred forty-three".