20953883 has 2 divisors, whose sum is σ = 20953884. Its totient is φ = 20953882.

The previous prime is 20953879. The next prime is 20953901. The reversal of 20953883 is 38835902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20953883 - 2² = 20953879 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20953853) 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, 10476941 + 10476942.

It is an arithmetic number, because the mean of its divisors is an integer number (10476942).

Almost surely, 2^20953883 is an apocalyptic number.

20953883 is a deficient number, since it is larger than the sum of its proper divisors (1).

20953883 is an equidigital number, since it uses as much as digits as its factorization.

20953883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 20953883 is about 4577.5411521908. The cubic root of 20953883 is about 275.6903119923.

The spelling of 20953883 in words is "twenty million, nine hundred fifty-three thousand, eight hundred eighty-three".