811447051 has 2 divisors, whose sum is σ = 811447052. Its totient is φ = 811447050.

The previous prime is 811446991. The next prime is 811447097. The reversal of 811447051 is 150744118.

811447051 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-811447051 is a prime.

It is a Chen prime.

It is equal to p_41704807 and since 811447051 and 41704807 have the same sum of digits, it is a Honaker prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405723525 + 405723526.

It is an arithmetic number, because the mean of its divisors is an integer number (405723526).

Almost surely, 2^811447051 is an apocalyptic number.

811447051 is a deficient number, since it is larger than the sum of its proper divisors (1).

811447051 is an equidigital number, since it uses as much as digits as its factorization.

811447051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 811447051 is about 28485.9096923374. The cubic root of 811447051 is about 932.7245232706.

The spelling of 811447051 in words is "eight hundred eleven million, four hundred forty-seven thousand, fifty-one".