55171489853 has 2 divisors, whose sum is σ = 55171489854. Its totient is φ = 55171489852.

The previous prime is 55171489819. The next prime is 55171489861. The reversal of 55171489853 is 35898417155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53509867684 + 1661622169 = 231322^2 + 40763^2 .

It is a cyclic number.

It is not a de Polignac number, because 55171489853 - 2³⁴ = 37991620669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55171489873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27585744926 + 27585744927.

It is an arithmetic number, because the mean of its divisors is an integer number (27585744927).

Almost surely, 2^55171489853 is an apocalyptic number.

It is an amenable number.

55171489853 is a deficient number, since it is larger than the sum of its proper divisors (1).

55171489853 is an equidigital number, since it uses as much as digits as its factorization.

55171489853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048000, while the sum is 56.

The spelling of 55171489853 in words is "fifty-five billion, one hundred seventy-one million, four hundred eighty-nine thousand, eight hundred fifty-three".