51654021037 has 2 divisors, whose sum is σ = 51654021038. Its totient is φ = 51654021036.

The previous prime is 51654021007. The next prime is 51654021073. The reversal of 51654021037 is 73012045615.

Together with next prime (51654021073) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30464560681 + 21189460356 = 174541^2 + 145566^2 .

It is a cyclic number.

It is not a de Polignac number, because 51654021037 - 2²³ = 51645632429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51654020993 and 51654021011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51654021007) 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, 25827010518 + 25827010519.

It is an arithmetic number, because the mean of its divisors is an integer number (25827010519).

Almost surely, 2^51654021037 is an apocalyptic number.

It is an amenable number.

51654021037 is a deficient number, since it is larger than the sum of its proper divisors (1).

51654021037 is an equidigital number, since it uses as much as digits as its factorization.

51654021037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The spelling of 51654021037 in words is "fifty-one billion, six hundred fifty-four million, twenty-one thousand, thirty-seven".