53051843021 has 2 divisors, whose sum is σ = 53051843022. Its totient is φ = 53051843020.

The previous prime is 53051842993. The next prime is 53051843137. The reversal of 53051843021 is 12034815035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38853928996 + 14197914025 = 197114^2 + 119155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53051843021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53051843321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26525921510 + 26525921511.

It is an arithmetic number, because the mean of its divisors is an integer number (26525921511).

Almost surely, 2^53051843021 is an apocalyptic number.

It is an amenable number.

53051843021 is a deficient number, since it is larger than the sum of its proper divisors (1).

53051843021 is an equidigital number, since it uses as much as digits as its factorization.

53051843021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 53051843021 in words is "fifty-three billion, fifty-one million, eight hundred forty-three thousand, twenty-one".