556023 has 16 divisors (see below), whose sum is σ = 816480. Its totient is φ = 334464.

The previous prime is 556021. The next prime is 556027. The reversal of 556023 is 320655.

It is not a de Polignac number, because 556023 - 2¹ = 556021 is a prime.

556023 is a lucky number.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1933 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (51030).

2⁵⁵⁶⁰²³ is an apocalyptic number.

556023 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

556023 is a deficient number, since it is larger than the sum of its proper divisors (260457).

556023 is a wasteful number, since it uses less digits than its factorization.

556023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 556023 is about 745.6694978340. The cubic root of 556023 is about 82.2301190235.

Adding to 556023 its reverse (320655), we get a palindrome (876678).

The spelling of 556023 in words is "five hundred fifty-six thousand, twenty-three".