55277475305 has 16 divisors (see below), whose sum is σ = 73177839504. Its totient is φ = 39824670720.

The previous prime is 55277475301. The next prime is 55277475311. The reversal of 55277475305 is 50357477255.

It can be written as a sum of positive squares in 8 ways, for example, as 16365573184 + 38911902121 = 127928^2 + 197261^2 .

It is not a de Polignac number, because 55277475305 - 2² = 55277475301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55277475301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10368344 + ... + 10373673.

It is an arithmetic number, because the mean of its divisors is an integer number (4573614969).

Almost surely, 2^55277475305 is an apocalyptic number.

It is an amenable number.

55277475305 is a deficient number, since it is larger than the sum of its proper divisors (17900364199).

55277475305 is a wasteful number, since it uses less digits than its factorization.

55277475305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20742076.

The product of its (nonzero) digits is 5145000, while the sum is 50.

The spelling of 55277475305 in words is "fifty-five billion, two hundred seventy-seven million, four hundred seventy-five thousand, three hundred five".