556845 has 8 divisors (see below), whose sum is σ = 890976. Its totient is φ = 296976.

The previous prime is 556841. The next prime is 556849. The reversal of 556845 is 548655.

556845 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (556841) and next prime (556849).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 556845 - 2² = 556841 is a prime.

It is an Ulam number.

556845 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18547 + ... + 18576.

It is an arithmetic number, because the mean of its divisors is an integer number (111372).

2⁵⁵⁶⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

556845 is a deficient number, since it is larger than the sum of its proper divisors (334131).

556845 is a wasteful number, since it uses less digits than its factorization.

556845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37131.

The product of its digits is 24000, while the sum is 33.

The square root of 556845 is about 746.2204768029. The cubic root of 556845 is about 82.2706208710.

The spelling of 556845 in words is "five hundred fifty-six thousand, eight hundred forty-five".