53031521849 has 2 divisors, whose sum is σ = 53031521850. Its totient is φ = 53031521848.

The previous prime is 53031521833. The next prime is 53031521857. The reversal of 53031521849 is 94812513035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53019667600 + 11854249 = 230260^2 + 3443^2 .

It is a cyclic number.

It is not a de Polignac number, because 53031521849 - 2⁴ = 53031521833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53031521899) 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, 26515760924 + 26515760925.

It is an arithmetic number, because the mean of its divisors is an integer number (26515760925).

Almost surely, 2^53031521849 is an apocalyptic number.

It is an amenable number.

53031521849 is a deficient number, since it is larger than the sum of its proper divisors (1).

53031521849 is an equidigital number, since it uses as much as digits as its factorization.

53031521849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 53031521849 in words is "fifty-three billion, thirty-one million, five hundred twenty-one thousand, eight hundred forty-nine".