811253 has 2 divisors, whose sum is σ = 811254. Its totient is φ = 811252.

The previous prime is 811241. The next prime is 811259. The reversal of 811253 is 352118.

811253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 669124 + 142129 = 818^2 + 377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-811253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (811259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405626 + 405627.

It is an arithmetic number, because the mean of its divisors is an integer number (405627).

2⁸¹¹²⁵³ is an apocalyptic number.

It is an amenable number.

811253 is a deficient number, since it is larger than the sum of its proper divisors (1).

811253 is an equidigital number, since it uses as much as digits as its factorization.

811253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 811253 is about 900.6958421132. The cubic root of 811253 is about 93.2650166167.

The spelling of 811253 in words is "eight hundred eleven thousand, two hundred fifty-three".