811812275 has 6 divisors (see below), whose sum is σ = 1006647252. Its totient is φ = 649449800.

The previous prime is 811812257. The next prime is 811812277. The reversal of 811812275 is 572218118.

It is not a de Polignac number, because 811812275 - 2⁸ = 811812019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811812277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16236221 + ... + 16236270.

It is an arithmetic number, because the mean of its divisors is an integer number (167774542).

Almost surely, 2^811812275 is an apocalyptic number.

811812275 is a deficient number, since it is larger than the sum of its proper divisors (194834977).

811812275 is a wasteful number, since it uses less digits than its factorization.

811812275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32472501 (or 32472496 counting only the distinct ones).

The product of its digits is 8960, while the sum is 35.

The square root of 811812275 is about 28492.3195791427. The cubic root of 811812275 is about 932.8644388636.

The spelling of 811812275 in words is "eight hundred eleven million, eight hundred twelve thousand, two hundred seventy-five".