55165716061 has 4 divisors (see below), whose sum is σ = 56070072124. Its totient is φ = 54261360000.

The previous prime is 55165716049. The next prime is 55165716071. The reversal of 55165716061 is 16061756155.

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 27099415161 + 28066300900 = 164619^2 + 167530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55165716061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55165715999 and 55165716017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55165716031) 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, 452177940 + ... + 452178061.

It is an arithmetic number, because the mean of its divisors is an integer number (14017518031).

Almost surely, 2^55165716061 is an apocalyptic number.

It is an amenable number.

55165716061 is a deficient number, since it is larger than the sum of its proper divisors (904356063).

55165716061 is an equidigital number, since it uses as much as digits as its factorization.

55165716061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904356062.

The product of its (nonzero) digits is 189000, while the sum is 43.

The spelling of 55165716061 in words is "fifty-five billion, one hundred sixty-five million, seven hundred sixteen thousand, sixty-one".