51316103 has 2 divisors, whose sum is σ = 51316104. Its totient is φ = 51316102.

The previous prime is 51316099. The next prime is 51316117. The reversal of 51316103 is 30161315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51316103 - 2² = 51316099 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51316123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25658051 + 25658052.

It is an arithmetic number, because the mean of its divisors is an integer number (25658052).

Almost surely, 2^51316103 is an apocalyptic number.

51316103 is a deficient number, since it is larger than the sum of its proper divisors (1).

51316103 is an equidigital number, since it uses as much as digits as its factorization.

51316103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 51316103 is about 7163.5258776667. The cubic root of 51316103 is about 371.6075731243.

Adding to 51316103 its reverse (30161315), we get a palindrome (81477418).

The spelling of 51316103 in words is "fifty-one million, three hundred sixteen thousand, one hundred three".