556201 has 4 divisors (see below), whose sum is σ = 558292. Its totient is φ = 554112.

The previous prime is 556181. The next prime is 556211. The reversal of 556201 is 102655.

It is a happy number.

556201 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 99225 + 456976 = 315^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 556201 - 2¹⁵ = 523433 is a prime.

It is a Duffinian number.

556201 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (556211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576 + ... + 1201.

It is an arithmetic number, because the mean of its divisors is an integer number (139573).

2⁵⁵⁶²⁰¹ is an apocalyptic number.

It is an amenable number.

556201 is a deficient number, since it is larger than the sum of its proper divisors (2091).

556201 is a wasteful number, since it uses less digits than its factorization.

556201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 556201 is about 745.7888441107. The cubic root of 556201 is about 82.2388928809.

Adding to 556201 its reverse (102655), we get a palindrome (658856).

It can be divided in two parts, 556 and 201, that added together give a palindrome (757).

The spelling of 556201 in words is "five hundred fifty-six thousand, two hundred one".