820550827 has 2 divisors, whose sum is σ = 820550828. Its totient is φ = 820550826.

The previous prime is 820550821. The next prime is 820550831. The reversal of 820550827 is 728055028.

820550827 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-820550827 is a prime.

It is not a weakly prime, because it can be changed into another prime (820550821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410275413 + 410275414.

It is an arithmetic number, because the mean of its divisors is an integer number (410275414).

Almost surely, 2^820550827 is an apocalyptic number.

820550827 is a deficient number, since it is larger than the sum of its proper divisors (1).

820550827 is an equidigital number, since it uses as much as digits as its factorization.

820550827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 820550827 is about 28645.2583685328. The cubic root of 820550827 is about 936.1996961570.

The spelling of 820550827 in words is "eight hundred twenty million, five hundred fifty thousand, eight hundred twenty-seven".