51389833057 has 2 divisors, whose sum is σ = 51389833058. Its totient is φ = 51389833056.

The previous prime is 51389833013. The next prime is 51389833063. The reversal of 51389833057 is 75033898315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51237038736 + 152794321 = 226356^2 + 12361^2 .

It is a cyclic number.

It is not a de Polignac number, because 51389833057 - 2⁷ = 51389832929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51389832995 and 51389833013.

It is not a weakly prime, because it can be changed into another prime (51389833357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25694916528 + 25694916529.

It is an arithmetic number, because the mean of its divisors is an integer number (25694916529).

Almost surely, 2^51389833057 is an apocalyptic number.

It is an amenable number.

51389833057 is a deficient number, since it is larger than the sum of its proper divisors (1).

51389833057 is an equidigital number, since it uses as much as digits as its factorization.

51389833057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 51389833057 in words is "fifty-one billion, three hundred eighty-nine million, eight hundred thirty-three thousand, fifty-seven".