556336221 has 8 divisors (see below), whose sum is σ = 847750464. Its totient is φ = 317906400.

The previous prime is 556336219. The next prime is 556336223. The reversal of 556336221 is 122633655.

It is an interprime number because it is at equal distance from previous prime (556336219) and next prime (556336223).

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

It is not a de Polignac number, because 556336221 - 2¹ = 556336219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556336223) 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, 13246080 + ... + 13246121.

It is an arithmetic number, because the mean of its divisors is an integer number (105968808).

Almost surely, 2^556336221 is an apocalyptic number.

It is an amenable number.

556336221 is a deficient number, since it is larger than the sum of its proper divisors (291414243).

556336221 is a wasteful number, since it uses less digits than its factorization.

556336221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26492211.

The product of its digits is 32400, while the sum is 33.

The square root of 556336221 is about 23586.7806408590. The cubic root of 556336221 is about 822.4555685326.

Adding to 556336221 its reverse (122633655), we get a palindrome (678969876).

The spelling of 556336221 in words is "five hundred fifty-six million, three hundred thirty-six thousand, two hundred twenty-one".