556393 has 8 divisors (see below), whose sum is σ = 615168. Its totient is φ = 500544.

The previous prime is 556373. The next prime is 556399. The reversal of 556393 is 393655.

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 556393 - 2¹³ = 548201 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556399) 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 7 ways as a sum of consecutive naturals, for example, 321 + ... + 1102.

It is an arithmetic number, because the mean of its divisors is an integer number (76896).

2⁵⁵⁶³⁹³ is an apocalyptic number.

It is an amenable number.

556393 is a deficient number, since it is larger than the sum of its proper divisors (58775).

556393 is a wasteful number, since it uses less digits than its factorization.

556393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463.

The product of its digits is 12150, while the sum is 31.

The square root of 556393 is about 745.9175557661. The cubic root of 556393 is about 82.2483547187.

It can be divided in two parts, 556 and 393, that added together give a palindrome (949).

The spelling of 556393 in words is "five hundred fifty-six thousand, three hundred ninety-three".