20210573 has 2 divisors, whose sum is σ = 20210574. Its totient is φ = 20210572.

The previous prime is 20210563. The next prime is 20210587. The reversal of 20210573 is 37501202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13564489 + 6646084 = 3683^2 + 2578^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210573 - 2⁸ = 20210317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105286 + 10105287.

It is an arithmetic number, because the mean of its divisors is an integer number (10105287).

Almost surely, 2^20210573 is an apocalyptic number.

It is an amenable number.

20210573 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210573 is an equidigital number, since it uses as much as digits as its factorization.

20210573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 20210573 is about 4495.6170877867. The cubic root of 20210573 is about 272.3910761817.

Adding to 20210573 its reverse (37501202), we get a palindrome (57711775).

The spelling of 20210573 in words is "twenty million, two hundred ten thousand, five hundred seventy-three".