55286439 has 16 divisors (see below), whose sum is σ = 79693824. Its totient is φ = 33890400.

The previous prime is 55286419. The next prime is 55286443. The reversal of 55286439 is 93468255.

It is not a de Polignac number, because 55286439 - 2⁸ = 55286183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55286439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55286419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7954 + ... + 13184.

It is an arithmetic number, because the mean of its divisors is an integer number (4980864).

Almost surely, 2^55286439 is an apocalyptic number.

55286439 is a deficient number, since it is larger than the sum of its proper divisors (24407385).

55286439 is a wasteful number, since it uses less digits than its factorization.

55286439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518.

The product of its digits is 259200, while the sum is 42.

The square root of 55286439 is about 7435.4851220347. The cubic root of 55286439 is about 380.9542935368.

The spelling of 55286439 in words is "fifty-five million, two hundred eighty-six thousand, four hundred thirty-nine".