815050811 has 2 divisors, whose sum is σ = 815050812. Its totient is φ = 815050810.

The previous prime is 815050799. The next prime is 815050843. The reversal of 815050811 is 118050518.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 815050811 - 2¹⁰ = 815049787 is a prime.

It is a super-3 number, since 3×815050811³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (815050871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407525405 + 407525406.

It is an arithmetic number, because the mean of its divisors is an integer number (407525406).

Almost surely, 2^815050811 is an apocalyptic number.

815050811 is a deficient number, since it is larger than the sum of its proper divisors (1).

815050811 is an equidigital number, since it uses as much as digits as its factorization.

815050811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 29.

The square root of 815050811 is about 28549.0947492210. The cubic root of 815050811 is about 934.1032747768.

The spelling of 815050811 in words is "eight hundred fifteen million, fifty thousand, eight hundred eleven".