55220187205 has 8 divisors (see below), whose sum is σ = 66273859872. Its totient is φ = 44169726288.

The previous prime is 55220187193. The next prime is 55220187229. The reversal of 55220187205 is 50278102255.

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

It is a cyclic number.

It is not a de Polignac number, because 55220187205 - 2⁵ = 55220187173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764947 + ... + 834016.

It is an arithmetic number, because the mean of its divisors is an integer number (8284232484).

Almost surely, 2^55220187205 is an apocalyptic number.

It is an amenable number.

55220187205 is a deficient number, since it is larger than the sum of its proper divisors (11053672667).

55220187205 is a wasteful number, since it uses less digits than its factorization.

55220187205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605875.

The product of its (nonzero) digits is 56000, while the sum is 37.

The spelling of 55220187205 in words is "fifty-five billion, two hundred twenty million, one hundred eighty-seven thousand, two hundred five".