20730053 has 2 divisors, whose sum is σ = 20730054. Its totient is φ = 20730052.

The previous prime is 20730037. The next prime is 20730067. The reversal of 20730053 is 35003702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20638849 + 91204 = 4543^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 20730053 - 2⁴ = 20730037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20730253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10365026 + 10365027.

It is an arithmetic number, because the mean of its divisors is an integer number (10365027).

Almost surely, 2^20730053 is an apocalyptic number.

It is an amenable number.

20730053 is a deficient number, since it is larger than the sum of its proper divisors (1).

20730053 is an equidigital number, since it uses as much as digits as its factorization.

20730053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 20.

The square root of 20730053 is about 4553.0267954406. The cubic root of 20730053 is about 274.7051517525.

Adding to 20730053 its reverse (35003702), we get a palindrome (55733755).

The spelling of 20730053 in words is "twenty million, seven hundred thirty thousand, fifty-three".