53051843857 has 2 divisors, whose sum is σ = 53051843858. Its totient is φ = 53051843856.

The previous prime is 53051843839. The next prime is 53051843869. The reversal of 53051843857 is 75834815035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52848952321 + 202891536 = 229889^2 + 14244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53051843857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53051843857.

It is not a weakly prime, because it can be changed into another prime (53051843827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26525921928 + 26525921929.

It is an arithmetic number, because the mean of its divisors is an integer number (26525921929).

Almost surely, 2^53051843857 is an apocalyptic number.

It is an amenable number.

53051843857 is a deficient number, since it is larger than the sum of its proper divisors (1).

53051843857 is an equidigital number, since it uses as much as digits as its factorization.

53051843857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 53051843857 in words is "fifty-three billion, fifty-one million, eight hundred forty-three thousand, eight hundred fifty-seven".