51368651 has 2 divisors, whose sum is σ = 51368652. Its totient is φ = 51368650.

The previous prime is 51368641. The next prime is 51368659. The reversal of 51368651 is 15686315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51368651 - 2⁶ = 51368587 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51368659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25684325 + 25684326.

It is an arithmetic number, because the mean of its divisors is an integer number (25684326).

Almost surely, 2^51368651 is an apocalyptic number.

51368651 is a deficient number, since it is larger than the sum of its proper divisors (1).

51368651 is an equidigital number, since it uses as much as digits as its factorization.

51368651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 51368651 is about 7167.1926861220. The cubic root of 51368651 is about 371.7343726542.

The spelling of 51368651 in words is "fifty-one million, three hundred sixty-eight thousand, six hundred fifty-one".