51216283 has 2 divisors, whose sum is σ = 51216284. Its totient is φ = 51216282.

The previous prime is 51216227. The next prime is 51216287. The reversal of 51216283 is 38261215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51216283 - 2⁹ = 51215771 is a prime.

It is equal to p_3069631 and since 51216283 and 3069631 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51216287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25608141 + 25608142.

It is an arithmetic number, because the mean of its divisors is an integer number (25608142).

Almost surely, 2^51216283 is an apocalyptic number.

51216283 is a deficient number, since it is larger than the sum of its proper divisors (1).

51216283 is an equidigital number, since it uses as much as digits as its factorization.

51216283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 51216283 is about 7156.5552467650. Note that the first 3 decimals coincide. The cubic root of 51216283 is about 371.3664665746.

Adding to 51216283 its reverse (38261215), we get a palindrome (89477498).

The spelling of 51216283 in words is "fifty-one million, two hundred sixteen thousand, two hundred eighty-three".