812575533 has 32 divisors (see below), whose sum is σ = 1409513472. Its totient is φ = 403761600.

The previous prime is 812575529. The next prime is 812575567. The reversal of 812575533 is 335575218.

It is not a de Polignac number, because 812575533 - 2² = 812575529 is a prime.

It is a super-3 number, since 3×812575533³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 812575491 and 812575500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812575133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71158 + ... + 81783.

It is an arithmetic number, because the mean of its divisors is an integer number (44047296).

Almost surely, 2^812575533 is an apocalyptic number.

It is an amenable number.

812575533 is a deficient number, since it is larger than the sum of its proper divisors (596937939).

812575533 is a wasteful number, since it uses less digits than its factorization.

812575533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152985.

The product of its digits is 126000, while the sum is 39.

The square root of 812575533 is about 28505.7105331546. The cubic root of 812575533 is about 933.1567039765.

The spelling of 812575533 in words is "eight hundred twelve million, five hundred seventy-five thousand, five hundred thirty-three".