55172010385 has 8 divisors (see below), whose sum is σ = 66257231040. Its totient is φ = 44103729264.

The previous prime is 55172010379. The next prime is 55172010389. The reversal of 55172010385 is 58301027155.

It is a happy number.

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 55172010385 - 2²¹ = 55169913233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55172010389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4227715 + ... + 4240744.

It is an arithmetic number, because the mean of its divisors is an integer number (8282153880).

Almost surely, 2^55172010385 is an apocalyptic number.

It is an amenable number.

55172010385 is a deficient number, since it is larger than the sum of its proper divisors (11085220655).

55172010385 is a wasteful number, since it uses less digits than its factorization.

55172010385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8469767.

The product of its (nonzero) digits is 42000, while the sum is 37.

The spelling of 55172010385 in words is "fifty-five billion, one hundred seventy-two million, ten thousand, three hundred eighty-five".