55286819 has 8 divisors (see below), whose sum is σ = 64726368. Its totient is φ = 46232640.

The previous prime is 55286809. The next prime is 55286831. The reversal of 55286819 is 91868255.

55286819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55286819 - 2²⁰ = 54238243 is a prime.

It is a super-2 number, since 2×55286819² = 6113264710277522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55286819.

It is not an unprimeable number, because it can be changed into a prime (55286809) 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, 96032 + ... + 96605.

It is an arithmetic number, because the mean of its divisors is an integer number (8090796).

Almost surely, 2^55286819 is an apocalyptic number.

55286819 is a deficient number, since it is larger than the sum of its proper divisors (9439549).

55286819 is a wasteful number, since it uses less digits than its factorization.

55286819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192685.

The product of its digits is 172800, while the sum is 44.

The square root of 55286819 is about 7435.5106751319. The cubic root of 55286819 is about 380.9551663385.

The spelling of 55286819 in words is "fifty-five million, two hundred eighty-six thousand, eight hundred nineteen".