20053853 has 4 divisors (see below), whose sum is σ = 20252508. Its totient is φ = 19855200.

The previous prime is 20053841. The next prime is 20053871. The reversal of 20053853 is 35835002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19201924 + 851929 = 4382^2 + 923^2 .

It is a cyclic number.

It is not a de Polignac number, because 20053853 - 2²⁰ = 19005277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20053883) 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 3 ways as a sum of consecutive naturals, for example, 99176 + ... + 99377.

It is an arithmetic number, because the mean of its divisors is an integer number (5063127).

Almost surely, 2^20053853 is an apocalyptic number.

It is an amenable number.

20053853 is a deficient number, since it is larger than the sum of its proper divisors (198655).

20053853 is a wasteful number, since it uses less digits than its factorization.

20053853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198654.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 20053853 is about 4478.1528558101. The cubic root of 20053853 is about 271.6851758668.

Adding to 20053853 its reverse (35835002), we get a palindrome (55888855).

The spelling of 20053853 in words is "twenty million, fifty-three thousand, eight hundred fifty-three".