51330103 has 4 divisors (see below), whose sum is σ = 55996488. Its totient is φ = 46663720.

The previous prime is 51330101. The next prime is 51330109. The reversal of 51330103 is 30103315.

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

It is a cyclic number.

It is not a de Polignac number, because 51330103 - 2¹ = 51330101 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 (51330101) 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, 2333176 + ... + 2333197.

It is an arithmetic number, because the mean of its divisors is an integer number (13999122).

Almost surely, 2^51330103 is an apocalyptic number.

51330103 is a deficient number, since it is larger than the sum of its proper divisors (4666385).

51330103 is a wasteful number, since it uses less digits than its factorization.

51330103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666384.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 51330103 is about 7164.5029834595. The cubic root of 51330103 is about 371.6413639014.

Adding to 51330103 its reverse (30103315), we get a palindrome (81433418).

The spelling of 51330103 in words is "fifty-one million, three hundred thirty thousand, one hundred three".