502891 has 4 divisors (see below), whose sum is σ = 504952. Its totient is φ = 500832.

The previous prime is 502883. The next prime is 502919. The reversal of 502891 is 198205.

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 502891 - 2³ = 502883 is a prime.

It is a Duffinian number.

502891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (502841) 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, 606 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (126238).

2⁵⁰²⁸⁹¹ is an apocalyptic number.

502891 is a deficient number, since it is larger than the sum of its proper divisors (2061).

502891 is a wasteful number, since it uses less digits than its factorization.

502891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 502891 is about 709.1480804458. The cubic root of 502891 is about 79.5227312608.

The spelling of 502891 in words is "five hundred two thousand, eight hundred ninety-one".