20530201 has 2 divisors, whose sum is σ = 20530202. Its totient is φ = 20530200.

The previous prime is 20530193. The next prime is 20530219. The reversal of 20530201 is 10203502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11833600 + 8696601 = 3440^2 + 2949^2 .

It is a cyclic number.

It is not a de Polignac number, because 20530201 - 2³ = 20530193 is a prime.

It is not a weakly prime, because it can be changed into another prime (20530261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10265100 + 10265101.

It is an arithmetic number, because the mean of its divisors is an integer number (10265101).

Almost surely, 2^20530201 is an apocalyptic number.

It is an amenable number.

20530201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20530201 is an equidigital number, since it uses as much as digits as its factorization.

20530201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 20530201 is about 4531.0264841424. The cubic root of 20530201 is about 273.8195172449.

Adding to 20530201 its reverse (10203502), we get a palindrome (30733703).

The spelling of 20530201 in words is "twenty million, five hundred thirty thousand, two hundred one".