51120103 has 4 divisors (see below), whose sum is σ = 51385168. Its totient is φ = 50855040.

The previous prime is 51120061. The next prime is 51120119. The reversal of 51120103 is 30102115.

51120103 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, and also an emirpimes, since its reverse is a distinct semiprime: 30102115 = 5 ⋅6020423.

It is a cyclic number.

It is not a de Polignac number, because 51120103 - 2⁹ = 51119591 is a prime.

It is a super-2 number, since 2×51120103² = 5226529861461218, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51120133) 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, 132243 + ... + 132628.

It is an arithmetic number, because the mean of its divisors is an integer number (12846292).

Almost surely, 2^51120103 is an apocalyptic number.

51120103 is a deficient number, since it is larger than the sum of its proper divisors (265065).

51120103 is a wasteful number, since it uses less digits than its factorization.

51120103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265064.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 51120103 is about 7149.8323756575. The cubic root of 51120103 is about 371.1338555993.

Adding to 51120103 its reverse (30102115), we get a palindrome (81222218).

The spelling of 51120103 in words is "fifty-one million, one hundred twenty thousand, one hundred three".