20562201 has 16 divisors (see below), whose sum is σ = 33232320. Its totient is φ = 12461760.

The previous prime is 20562187. The next prime is 20562203. The reversal of 20562201 is 10226502.

It is not a de Polignac number, because 20562201 - 2⁹ = 20561689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20562203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34320 + ... + 34913.

It is an arithmetic number, because the mean of its divisors is an integer number (2077020).

Almost surely, 2^20562201 is an apocalyptic number.

It is an amenable number.

20562201 is a deficient number, since it is larger than the sum of its proper divisors (12670119).

20562201 is a wasteful number, since it uses less digits than its factorization.

20562201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69253 (or 69247 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20562201 is about 4534.5563178772. The cubic root of 20562201 is about 273.9617090008.

Adding to 20562201 its reverse (10226502), we get a palindrome (30788703).

The spelling of 20562201 in words is "twenty million, five hundred sixty-two thousand, two hundred one".