55853553109 has 2 divisors, whose sum is σ = 55853553110. Its totient is φ = 55853553108.

The previous prime is 55853553029. The next prime is 55853553113. The reversal of 55853553109 is 90135535855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54938672100 + 914881009 = 234390^2 + 30247^2 .

It is a cyclic number.

It is not a de Polignac number, because 55853553109 - 2¹³ = 55853544917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55853553169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27926776554 + 27926776555.

It is an arithmetic number, because the mean of its divisors is an integer number (27926776555).

Almost surely, 2^55853553109 is an apocalyptic number.

It is an amenable number.

55853553109 is a deficient number, since it is larger than the sum of its proper divisors (1).

55853553109 is an equidigital number, since it uses as much as digits as its factorization.

55853553109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2025000, while the sum is 49.

The spelling of 55853553109 in words is "fifty-five billion, eight hundred fifty-three million, five hundred fifty-three thousand, one hundred nine".