535813 has 4 divisors (see below), whose sum is σ = 540160. Its totient is φ = 531468.

The previous prime is 535811. The next prime is 535849. The reversal of 535813 is 318535.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 535813 - 2¹ = 535811 is a prime.

It is a d-powerful number, because it can be written as 5 + 3⁶ + 8³ + 5⁵ + 1 + 3¹² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (535811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1983 + ... + 2236.

It is an arithmetic number, because the mean of its divisors is an integer number (135040).

2⁵³⁵⁸¹³ is an apocalyptic number.

It is an amenable number.

535813 is a deficient number, since it is larger than the sum of its proper divisors (4347).

535813 is a wasteful number, since it uses less digits than its factorization.

535813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4346.

The product of its digits is 1800, while the sum is 25.

The square root of 535813 is about 731.9924863002. The cubic root of 535813 is about 81.2215142746.

The spelling of 535813 in words is "five hundred thirty-five thousand, eight hundred thirteen".