556145 has 4 divisors (see below), whose sum is σ = 667380. Its totient is φ = 444912.

The previous prime is 556123. The next prime is 556159. The reversal of 556145 is 541655.

556145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 247009 + 309136 = 497^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 556145 - 2¹⁴ = 539761 is a prime.

It is a super-2 number, since 2×556145² = 618594522050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55610 + ... + 55619.

It is an arithmetic number, because the mean of its divisors is an integer number (166845).

2⁵⁵⁶¹⁴⁵ is an apocalyptic number.

It is an amenable number.

556145 is a deficient number, since it is larger than the sum of its proper divisors (111235).

556145 is a wasteful number, since it uses less digits than its factorization.

556145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111234.

The product of its digits is 3000, while the sum is 26.

The square root of 556145 is about 745.7512990267. The cubic root of 556145 is about 82.2361327681.

The spelling of 556145 in words is "five hundred fifty-six thousand, one hundred forty-five".