20765201 has 2 divisors, whose sum is σ = 20765202. Its totient is φ = 20765200.

The previous prime is 20765183. The next prime is 20765207. The reversal of 20765201 is 10256702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17230801 + 3534400 = 4151^2 + 1880^2 .

It is a cyclic number.

It is not a de Polignac number, because 20765201 - 2⁶ = 20765137 is a prime.

It is not a weakly prime, because it can be changed into another prime (20765207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10382600 + 10382601.

It is an arithmetic number, because the mean of its divisors is an integer number (10382601).

Almost surely, 2^20765201 is an apocalyptic number.

It is an amenable number.

20765201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20765201 is an equidigital number, since it uses as much as digits as its factorization.

20765201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20765201 is about 4556.8850106185. The cubic root of 20765201 is about 274.8603191465.

The spelling of 20765201 in words is "twenty million, seven hundred sixty-five thousand, two hundred one".