55355881071 has 8 divisors (see below), whose sum is σ = 73937104384. Its totient is φ = 36839289240.

The previous prime is 55355881027. The next prime is 55355881099. The reversal of 55355881071 is 17018855355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55355881071 - 2¹³ = 55355872879 is a prime.

It is a super-2 number, since 2×55355881071² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55355881071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55355881271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16155871 + ... + 16159296.

It is an arithmetic number, because the mean of its divisors is an integer number (9242138048).

Almost surely, 2^55355881071 is an apocalyptic number.

55355881071 is a deficient number, since it is larger than the sum of its proper divisors (18581223313).

55355881071 is a wasteful number, since it uses less digits than its factorization.

55355881071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32315741.

The product of its (nonzero) digits is 840000, while the sum is 48.

The spelling of 55355881071 in words is "fifty-five billion, three hundred fifty-five million, eight hundred eighty-one thousand, seventy-one".