55331532889 has 2 divisors, whose sum is σ = 55331532890. Its totient is φ = 55331532888.

The previous prime is 55331532811. The next prime is 55331532899. The reversal of 55331532889 is 98823513355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45113760000 + 10217772889 = 212400^2 + 101083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55331532889 is a prime.

It is not a weakly prime, because it can be changed into another prime (55331532899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27665766444 + 27665766445.

It is an arithmetic number, because the mean of its divisors is an integer number (27665766445).

Almost surely, 2^55331532889 is an apocalyptic number.

It is an amenable number.

55331532889 is a deficient number, since it is larger than the sum of its proper divisors (1).

55331532889 is an equidigital number, since it uses as much as digits as its factorization.

55331532889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888000, while the sum is 52.

The spelling of 55331532889 in words is "fifty-five billion, three hundred thirty-one million, five hundred thirty-two thousand, eight hundred eighty-nine".