55161317273 has 6 divisors (see below), whose sum is σ = 58407125994. Its totient is φ = 51915622496.

The previous prime is 55161317269. The next prime is 55161317293. The reversal of 55161317273 is 37271316155.

It can be written as a sum of positive squares in only one way, i.e., 51916533904 + 3244783369 = 227852^2 + 56963^2 .

It is not a de Polignac number, because 55161317273 - 2² = 55161317269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55161317273.

It is not an unprimeable number, because it can be changed into a prime (55161317293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 939890 + ... + 996852.

It is an arithmetic number, because the mean of its divisors is an integer number (9734520999).

Almost surely, 2^55161317273 is an apocalyptic number.

It is an amenable number.

55161317273 is a deficient number, since it is larger than the sum of its proper divisors (3245808721).

55161317273 is an frugal number, since it uses more digits than its factorization.

55161317273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113943 (or 56980 counting only the distinct ones).

The product of its digits is 132300, while the sum is 41.

The spelling of 55161317273 in words is "fifty-five billion, one hundred sixty-one million, three hundred seventeen thousand, two hundred seventy-three".