55705850173 has 4 divisors (see below), whose sum is σ = 55863657468. Its totient is φ = 55548042880.

The previous prime is 55705850159. The next prime is 55705850177. The reversal of 55705850173 is 37105850755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12718877284 + 42986972889 = 112778^2 + 207333^2 .

It is a cyclic number.

It is not a de Polignac number, because 55705850173 - 2¹³ = 55705841981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55705850177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78903118 + ... + 78903823.

It is an arithmetic number, because the mean of its divisors is an integer number (13965914367).

Almost surely, 2^55705850173 is an apocalyptic number.

It is an amenable number.

55705850173 is a deficient number, since it is larger than the sum of its proper divisors (157807295).

55705850173 is a wasteful number, since it uses less digits than its factorization.

55705850173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157807294.

The product of its (nonzero) digits is 735000, while the sum is 46.

The spelling of 55705850173 in words is "fifty-five billion, seven hundred five million, eight hundred fifty thousand, one hundred seventy-three".