55305782851 has 4 divisors (see below), whose sum is σ = 60333581304. Its totient is φ = 50277984400.

The previous prime is 55305782843. The next prime is 55305782897. The reversal of 55305782851 is 15828750355.

It is a happy number.

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 55305782851 - 2³ = 55305782843 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55305782795 and 55305782804.

It is not an unprimeable number, because it can be changed into a prime (55305782251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513899210 + ... + 2513899231.

It is an arithmetic number, because the mean of its divisors is an integer number (15083395326).

Almost surely, 2^55305782851 is an apocalyptic number.

55305782851 is a deficient number, since it is larger than the sum of its proper divisors (5027798453).

55305782851 is a wasteful number, since it uses less digits than its factorization.

55305782851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027798452.

The product of its (nonzero) digits is 1680000, while the sum is 49.

The spelling of 55305782851 in words is "fifty-five billion, three hundred five million, seven hundred eighty-two thousand, eight hundred fifty-one".