53555832809 has 2 divisors, whose sum is σ = 53555832810. Its totient is φ = 53555832808.

The previous prime is 53555832749. The next prime is 53555832823. The reversal of 53555832809 is 90823855535.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41350002409 + 12205830400 = 203347^2 + 110480^2 .

It is a cyclic number.

It is not a de Polignac number, because 53555832809 - 2¹⁶ = 53555767273 is a prime.

It is not a weakly prime, because it can be changed into another prime (53555832839) 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, 26777916404 + 26777916405.

It is an arithmetic number, because the mean of its divisors is an integer number (26777916405).

Almost surely, 2^53555832809 is an apocalyptic number.

It is an amenable number.

53555832809 is a deficient number, since it is larger than the sum of its proper divisors (1).

53555832809 is an equidigital number, since it uses as much as digits as its factorization.

53555832809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480000, while the sum is 53.

The spelling of 53555832809 in words is "fifty-three billion, five hundred fifty-five million, eight hundred thirty-two thousand, eight hundred nine".