20500201 has 4 divisors (see below), whose sum is σ = 20518992. Its totient is φ = 20481412.

The previous prime is 20500189. The next prime is 20500217. The reversal of 20500201 is 10200502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20500201 - 2⁵ = 20500169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20500231) 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, 7651 + ... + 9976.

It is an arithmetic number, because the mean of its divisors is an integer number (5129748).

Almost surely, 2^20500201 is an apocalyptic number.

It is an amenable number.

20500201 is a deficient number, since it is larger than the sum of its proper divisors (18791).

20500201 is a wasteful number, since it uses less digits than its factorization.

20500201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18790.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 20500201 is about 4527.7147657510. The cubic root of 20500201 is about 273.6860782203.

Adding to 20500201 its reverse (10200502), we get a palindrome (30700703).

The spelling of 20500201 in words is "twenty million, five hundred thousand, two hundred one".