53033275755821 has 2 divisors, whose sum is σ = 53033275755822. Its totient is φ = 53033275755820.

The previous prime is 53033275755799. The next prime is 53033275755869. The reversal of 53033275755821 is 12855757233035.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52818155112100 + 215120643721 = 7267610^2 + 463811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53033275755821 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53033275755521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26516637877910 + 26516637877911.

It is an arithmetic number, because the mean of its divisors is an integer number (26516637877911).

Almost surely, 2^{53033275755821} is an apocalyptic number.

It is an amenable number.

53033275755821 is a deficient number, since it is larger than the sum of its proper divisors (1).

53033275755821 is an equidigital number, since it uses as much as digits as its factorization.

53033275755821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460000, while the sum is 56.

The spelling of 53033275755821 in words is "fifty-three trillion, thirty-three billion, two hundred seventy-five million, seven hundred fifty-five thousand, eight hundred twenty-one".