51317633 has 2 divisors, whose sum is σ = 51317634. Its totient is φ = 51317632.

The previous prime is 51317599. The next prime is 51317641. The reversal of 51317633 is 33671315.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51093904 + 223729 = 7148^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 51317633 - 2¹⁰ = 51316609 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51317596 and 51317605.

It is not a weakly prime, because it can be changed into another prime (51316633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25658816 + 25658817.

It is an arithmetic number, because the mean of its divisors is an integer number (25658817).

Almost surely, 2^51317633 is an apocalyptic number.

It is an amenable number.

51317633 is a deficient number, since it is larger than the sum of its proper divisors (1).

51317633 is an equidigital number, since it uses as much as digits as its factorization.

51317633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 29.

The square root of 51317633 is about 7163.6326678578. The cubic root of 51317633 is about 371.6112662726.

Adding to 51317633 its reverse (33671315), we get a palindrome (84988948).

The spelling of 51317633 in words is "fifty-one million, three hundred seventeen thousand, six hundred thirty-three".