812845253 has 8 divisors (see below), whose sum is σ = 887483520. Its totient is φ = 738330880.

The previous prime is 812845219. The next prime is 812845283. The reversal of 812845253 is 352548218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 812845253 - 2¹⁴ = 812828869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812845283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16973 + ... + 43746.

It is an arithmetic number, because the mean of its divisors is an integer number (110935440).

Almost surely, 2^812845253 is an apocalyptic number.

It is an amenable number.

812845253 is a deficient number, since it is larger than the sum of its proper divisors (74638267).

812845253 is a wasteful number, since it uses less digits than its factorization.

812845253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61947.

The product of its digits is 76800, while the sum is 38.

The square root of 812845253 is about 28510.4411225081. The cubic root of 812845253 is about 933.2599408134.

The spelling of 812845253 in words is "eight hundred twelve million, eight hundred forty-five thousand, two hundred fifty-three".