55086839 has 2 divisors, whose sum is σ = 55086840. Its totient is φ = 55086838.

The previous prime is 55086793. The next prime is 55086859. The reversal of 55086839 is 93868055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55086839 - 2¹² = 55082743 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55086839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55086859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27543419 + 27543420.

It is an arithmetic number, because the mean of its divisors is an integer number (27543420).

Almost surely, 2^55086839 is an apocalyptic number.

55086839 is a deficient number, since it is larger than the sum of its proper divisors (1).

55086839 is an equidigital number, since it uses as much as digits as its factorization.

55086839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 55086839 is about 7422.0508621270. The cubic root of 55086839 is about 380.4952890666.

The spelling of 55086839 in words is "fifty-five million, eighty-six thousand, eight hundred thirty-nine".