811530056 has 64 divisors (see below), whose sum is σ = 1609312320. Its totient is φ = 383201280.

The previous prime is 811530053. The next prime is 811530079. The reversal of 811530056 is 650035118.

It is not an unprimeable number, because it can be changed into a prime (811530053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2298776 + ... + 2299128.

It is an arithmetic number, because the mean of its divisors is an integer number (25145505).

Almost surely, 2^811530056 is an apocalyptic number.

811530056 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

811530056 is a deficient number, since it is larger than the sum of its proper divisors (797782264).

811530056 is a wasteful number, since it uses less digits than its factorization.

811530056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 811530056 is about 28487.3666034613. The cubic root of 811530056 is about 932.7563257808.

The spelling of 811530056 in words is "eight hundred eleven million, five hundred thirty thousand, fifty-six".