53550535817 has 2 divisors, whose sum is σ = 53550535818. Its totient is φ = 53550535816.

The previous prime is 53550535813. The next prime is 53550535847. The reversal of 53550535817 is 71853505535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49629146176 + 3921389641 = 222776^2 + 62621^2 .

It is a cyclic number.

It is not a de Polignac number, because 53550535817 - 2² = 53550535813 is a prime.

It is not a weakly prime, because it can be changed into another prime (53550535813) 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, 26775267908 + 26775267909.

It is an arithmetic number, because the mean of its divisors is an integer number (26775267909).

Almost surely, 2^53550535817 is an apocalyptic number.

It is an amenable number.

53550535817 is a deficient number, since it is larger than the sum of its proper divisors (1).

53550535817 is an equidigital number, since it uses as much as digits as its factorization.

53550535817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1575000, while the sum is 47.

The spelling of 53550535817 in words is "fifty-three billion, five hundred fifty million, five hundred thirty-five thousand, eight hundred seventeen".