555839 has 4 divisors (see below), whose sum is σ = 565320. Its totient is φ = 546360.

The previous prime is 555829. The next prime is 555853. The reversal of 555839 is 938555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938555 = 5 ⋅187711.

It is a cyclic number.

It is not a de Polignac number, because 555839 - 2⁴ = 555823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 555799 and 555808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555829) 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 3 ways as a sum of consecutive naturals, for example, 4652 + ... + 4769.

It is an arithmetic number, because the mean of its divisors is an integer number (141330).

2⁵⁵⁵⁸³⁹ is an apocalyptic number.

555839 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

555839 is a deficient number, since it is larger than the sum of its proper divisors (9481).

555839 is an equidigital number, since it uses as much as digits as its factorization.

555839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9480.

The product of its digits is 27000, while the sum is 35.

The square root of 555839 is about 745.5461085674. The cubic root of 555839 is about 82.2210474496.

The spelling of 555839 in words is "five hundred fifty-five thousand, eight hundred thirty-nine".