556385 has 8 divisors (see below), whose sum is σ = 672000. Its totient is φ = 442224.

The previous prime is 556373. The next prime is 556399. The reversal of 556385 is 583655.

556385 is nontrivially palindromic in base 7.

556385 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 556385 - 2⁶ = 556321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866 + ... + 1364.

It is an arithmetic number, because the mean of its divisors is an integer number (84000).

2⁵⁵⁶³⁸⁵ is an apocalyptic number.

It is an amenable number.

556385 is a deficient number, since it is larger than the sum of its proper divisors (115615).

556385 is a wasteful number, since it uses less digits than its factorization.

556385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727.

The product of its digits is 18000, while the sum is 32.

The square root of 556385 is about 745.9121932238. The cubic root of 556385 is about 82.2479605189.

The spelling of 556385 in words is "five hundred fifty-six thousand, three hundred eighty-five".