555939 has 12 divisors (see below), whose sum is σ = 809536. Its totient is φ = 367632.

The previous prime is 555931. The next prime is 555941. The reversal of 555939 is 939555.

It is not a de Polignac number, because 555939 - 2³ = 555931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1869 + ... + 2145.

2⁵⁵⁵⁹³⁹ is an apocalyptic number.

555939 is a deficient number, since it is larger than the sum of its proper divisors (253597).

555939 is a wasteful number, since it uses less digits than its factorization.

555939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 503 counting only the distinct ones).

The product of its digits is 30375, while the sum is 36.

The square root of 555939 is about 745.6131704845. The cubic root of 555939 is about 82.2259779011.

The spelling of 555939 in words is "five hundred fifty-five thousand, nine hundred thirty-nine".