51283631237 has 2 divisors, whose sum is σ = 51283631238. Its totient is φ = 51283631236.

The previous prime is 51283631221. The next prime is 51283631263. The reversal of 51283631237 is 73213638215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51281414116 + 2217121 = 226454^2 + 1489^2 .

It is a cyclic number.

It is not a de Polignac number, because 51283631237 - 2⁴ = 51283631221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51283631194 and 51283631203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51283631537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25641815618 + 25641815619.

It is an arithmetic number, because the mean of its divisors is an integer number (25641815619).

Almost surely, 2^51283631237 is an apocalyptic number.

It is an amenable number.

51283631237 is a deficient number, since it is larger than the sum of its proper divisors (1).

51283631237 is an equidigital number, since it uses as much as digits as its factorization.

51283631237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The spelling of 51283631237 in words is "fifty-one billion, two hundred eighty-three million, six hundred thirty-one thousand, two hundred thirty-seven".