20053851 has 8 divisors (see below), whose sum is σ = 26850384. Its totient is φ = 13313280.

The previous prime is 20053841. The next prime is 20053871. The reversal of 20053851 is 15835002.

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

It is not a de Polignac number, because 20053851 - 2¹⁴ = 20037467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20053801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13146 + ... + 14591.

It is an arithmetic number, because the mean of its divisors is an integer number (3356298).

Almost surely, 2^20053851 is an apocalyptic number.

20053851 is a deficient number, since it is larger than the sum of its proper divisors (6796533).

20053851 is a wasteful number, since it uses less digits than its factorization.

20053851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27981.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 20053851 is about 4478.1526325037. The cubic root of 20053851 is about 271.6851668349.

Adding to 20053851 its reverse (15835002), we get a palindrome (35888853).

The spelling of 20053851 in words is "twenty million, fifty-three thousand, eight hundred fifty-one".