20351201 has 8 divisors (see below), whose sum is σ = 22045800. Its totient is φ = 18675072.

The previous prime is 20351173. The next prime is 20351207. The reversal of 20351201 is 10215302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6838225 + 13512976 = 2615^2 + 3676^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20351201 - 2¹⁴ = 20334817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20351207) 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 7 ways as a sum of consecutive naturals, for example, 2276 + ... + 6773.

It is an arithmetic number, because the mean of its divisors is an integer number (2755725).

Almost surely, 2^20351201 is an apocalyptic number.

It is an amenable number.

20351201 is a deficient number, since it is larger than the sum of its proper divisors (1694599).

20351201 is a wasteful number, since it uses less digits than its factorization.

20351201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9235.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 20351201 is about 4511.2305416593. The cubic root of 20351201 is about 273.0213949161.

Adding to 20351201 its reverse (10215302), we get a palindrome (30566503).

The spelling of 20351201 in words is "twenty million, three hundred fifty-one thousand, two hundred one".