20051103 has 8 divisors (see below), whose sum is σ = 26822016. Its totient is φ = 13323800.

The previous prime is 20051081. The next prime is 20051107. The reversal of 20051103 is 30115002.

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

It is a cyclic number.

It is not a de Polignac number, because 20051103 - 2⁵ = 20051071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20051107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9813 + ... + 11678.

It is an arithmetic number, because the mean of its divisors is an integer number (3352752).

Almost surely, 2^20051103 is an apocalyptic number.

20051103 is a deficient number, since it is larger than the sum of its proper divisors (6770913).

20051103 is a wasteful number, since it uses less digits than its factorization.

20051103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21805.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 20051103 is about 4477.8457990422. The cubic root of 20051103 is about 271.6727565013.

Adding to 20051103 its reverse (30115002), we get a palindrome (50166105).

The spelling of 20051103 in words is "twenty million, fifty-one thousand, one hundred three".