20465953 has 2 divisors, whose sum is σ = 20465954. Its totient is φ = 20465952.

The previous prime is 20465941. The next prime is 20465957. The reversal of 20465953 is 35956402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11175649 + 9290304 = 3343^2 + 3048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20465953 is a prime.

It is not a weakly prime, because it can be changed into another prime (20465957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10232976 + 10232977.

It is an arithmetic number, because the mean of its divisors is an integer number (10232977).

Almost surely, 2^20465953 is an apocalyptic number.

It is an amenable number.

20465953 is a deficient number, since it is larger than the sum of its proper divisors (1).

20465953 is an equidigital number, since it uses as much as digits as its factorization.

20465953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 20465953 is about 4523.9311444804. The cubic root of 20465953 is about 273.5335849946.

The spelling of 20465953 in words is "twenty million, four hundred sixty-five thousand, nine hundred fifty-three".