55537778029 has 2 divisors, whose sum is σ = 55537778030. Its totient is φ = 55537778028.

The previous prime is 55537778003. The next prime is 55537778047. The reversal of 55537778029 is 92087773555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45913775625 + 9624002404 = 214275^2 + 98102^2 .

It is a cyclic number.

It is not a de Polignac number, because 55537778029 - 2¹⁹ = 55537253741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55537778059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27768889014 + 27768889015.

It is an arithmetic number, because the mean of its divisors is an integer number (27768889015).

Almost surely, 2^55537778029 is an apocalyptic number.

It is an amenable number.

55537778029 is a deficient number, since it is larger than the sum of its proper divisors (1).

55537778029 is an equidigital number, since it uses as much as digits as its factorization.

55537778029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18522000, while the sum is 58.

The spelling of 55537778029 in words is "fifty-five billion, five hundred thirty-seven million, seven hundred seventy-eight thousand, twenty-nine".