51316043 has 2 divisors, whose sum is σ = 51316044. Its totient is φ = 51316042.

The previous prime is 51316039. The next prime is 51316063. The reversal of 51316043 is 34061315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51316043 - 2² = 51316039 is a prime.

It is not a weakly prime, because it can be changed into another prime (51316033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25658021 + 25658022.

It is an arithmetic number, because the mean of its divisors is an integer number (25658022).

Almost surely, 2^51316043 is an apocalyptic number.

51316043 is a deficient number, since it is larger than the sum of its proper divisors (1).

51316043 is an equidigital number, since it uses as much as digits as its factorization.

51316043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 51316043 is about 7163.5216897836. The cubic root of 51316043 is about 371.6074282935.

Adding to 51316043 its reverse (34061315), we get a palindrome (85377358).

The spelling of 51316043 in words is "fifty-one million, three hundred sixteen thousand, forty-three".