51616043 has 2 divisors, whose sum is σ = 51616044. Its totient is φ = 51616042.

The previous prime is 51616009. The next prime is 51616057. The reversal of 51616043 is 34061615.

51616043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51616043 - 2⁸ = 51615787 is a prime.

It is not a weakly prime, because it can be changed into another prime (51616093) 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 as a sum of consecutive naturals, namely, 25808021 + 25808022.

It is an arithmetic number, because the mean of its divisors is an integer number (25808022).

Almost surely, 2^51616043 is an apocalyptic number.

51616043 is a deficient number, since it is larger than the sum of its proper divisors (1).

51616043 is an equidigital number, since it uses as much as digits as its factorization.

51616043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 51616043 is about 7184.4305967836. The cubic root of 51616043 is about 372.3301761808.

Adding to 51616043 its reverse (34061615), we get a palindrome (85677658).

The spelling of 51616043 in words is "fifty-one million, six hundred sixteen thousand, forty-three".