810133 has 4 divisors (see below), whose sum is σ = 816640. Its totient is φ = 803628.

The previous prime is 810109. The next prime is 810137. The reversal of 810133 is 331018.

810133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-810133 is a prime.

It is a Duffinian number.

810133 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810137) 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, 3063 + ... + 3316.

It is an arithmetic number, because the mean of its divisors is an integer number (204160).

2⁸¹⁰¹³³ is an apocalyptic number.

It is an amenable number.

810133 is a deficient number, since it is larger than the sum of its proper divisors (6507).

810133 is a wasteful number, since it uses less digits than its factorization.

810133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6506.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 810133 is about 900.0738858560. The cubic root of 810133 is about 93.2220768984. Note that the first 3 decimals are identical.

The spelling of 810133 in words is "eight hundred ten thousand, one hundred thirty-three".