51001103 has 4 divisors (see below), whose sum is σ = 51047880. Its totient is φ = 50954328.

The previous prime is 51001043. The next prime is 51001109. The reversal of 51001103 is 30110015.

51001103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51001103 - 2⁸ = 51000847 is a prime.

It is a super-2 number, since 2×51001103² = 5202225014433218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51001109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21713 + ... + 23946.

It is an arithmetic number, because the mean of its divisors is an integer number (12761970).

Almost surely, 2^51001103 is an apocalyptic number.

51001103 is a deficient number, since it is larger than the sum of its proper divisors (46777).

51001103 is a wasteful number, since it uses less digits than its factorization.

51001103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46776.

The product of its (nonzero) digits is 15, while the sum is 11.

The square root of 51001103 is about 7141.5056535719. The cubic root of 51001103 is about 370.8456503701.

Adding to 51001103 its reverse (30110015), we get a palindrome (81111118).

The spelling of 51001103 in words is "fifty-one million, one thousand, one hundred three".