55644613271 has 4 divisors (see below), whose sum is σ = 59924968152. Its totient is φ = 51364258392.

The previous prime is 55644613267. The next prime is 55644613273. The reversal of 55644613271 is 17231644655.

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

It is a cyclic number.

It is not a de Polignac number, because 55644613271 - 2² = 55644613267 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 (55644613273) 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, 2140177421 + ... + 2140177446.

It is an arithmetic number, because the mean of its divisors is an integer number (14981242038).

Almost surely, 2^55644613271 is an apocalyptic number.

55644613271 is a deficient number, since it is larger than the sum of its proper divisors (4280354881).

55644613271 is a wasteful number, since it uses less digits than its factorization.

55644613271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280354880.

The product of its digits is 604800, while the sum is 44.

The spelling of 55644613271 in words is "fifty-five billion, six hundred forty-four million, six hundred thirteen thousand, two hundred seventy-one".