815200027 has 2 divisors, whose sum is σ = 815200028. Its totient is φ = 815200026.

The previous prime is 815200013. The next prime is 815200051. The reversal of 815200027 is 720002518.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 815200027 - 2¹⁹ = 814675739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 815199974 and 815200010.

It is not a weakly prime, because it can be changed into another prime (815200627) 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 as a sum of consecutive naturals, namely, 407600013 + 407600014.

It is an arithmetic number, because the mean of its divisors is an integer number (407600014).

Almost surely, 2^815200027 is an apocalyptic number.

815200027 is a deficient number, since it is larger than the sum of its proper divisors (1).

815200027 is an equidigital number, since it uses as much as digits as its factorization.

815200027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 815200027 is about 28551.7079524150. The cubic root of 815200027 is about 934.1602751697.

The spelling of 815200027 in words is "eight hundred fifteen million, two hundred thousand, twenty-seven".