20413201 has 4 divisors (see below), whose sum is σ = 21487600. Its totient is φ = 19338804.

The previous prime is 20413199. The next prime is 20413219. The reversal of 20413201 is 10231402.

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 20413201 - 2¹ = 20413199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20413231) 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, 537171 + ... + 537208.

It is an arithmetic number, because the mean of its divisors is an integer number (5371900).

Almost surely, 2^20413201 is an apocalyptic number.

It is an amenable number.

20413201 is a deficient number, since it is larger than the sum of its proper divisors (1074399).

20413201 is a wasteful number, since it uses less digits than its factorization.

20413201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074398.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20413201 is about 4518.0970551771. The cubic root of 20413201 is about 273.2983673627.

Adding to 20413201 its reverse (10231402), we get a palindrome (30644603).

The spelling of 20413201 in words is "twenty million, four hundred thirteen thousand, two hundred one".