20365201 has 4 divisors (see below), whose sum is σ = 21563172. Its totient is φ = 19167232.

The previous prime is 20365193. The next prime is 20365229. The reversal of 20365201 is 10256302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17808400 + 2556801 = 4220^2 + 1599^2 .

It is a cyclic number.

It is not a de Polignac number, because 20365201 - 2³ = 20365193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20365271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598960 + ... + 598993.

It is an arithmetic number, because the mean of its divisors is an integer number (5390793).

Almost surely, 2^20365201 is an apocalyptic number.

It is an amenable number.

20365201 is a deficient number, since it is larger than the sum of its proper divisors (1197971).

20365201 is a wasteful number, since it uses less digits than its factorization.

20365201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197970.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20365201 is about 4512.7819579501. The cubic root of 20365201 is about 273.0839861997.

The spelling of 20365201 in words is "twenty million, three hundred sixty-five thousand, two hundred one".