20822051 has 2 divisors, whose sum is σ = 20822052. Its totient is φ = 20822050.

The previous prime is 20822047. The next prime is 20822063. The reversal of 20822051 is 15022802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20822051 - 2² = 20822047 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20822071) 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, 10411025 + 10411026.

It is an arithmetic number, because the mean of its divisors is an integer number (10411026).

Almost surely, 2^20822051 is an apocalyptic number.

20822051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20822051 is an equidigital number, since it uses as much as digits as its factorization.

20822051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 20822051 is about 4563.1185608090. The cubic root of 20822051 is about 275.1109238468.

Adding to 20822051 its reverse (15022802), we get a palindrome (35844853).

The spelling of 20822051 in words is "twenty million, eight hundred twenty-two thousand, fifty-one".