556021226 has 8 divisors (see below), whose sum is σ = 835012164. Its totient is φ = 277683840.

The previous prime is 556021223. The next prime is 556021259. The reversal of 556021226 is 622120655.

It can be written as a sum of positive squares in 2 ways, for example, as 552955225 + 3066001 = 23515^2 + 1751^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (556021223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161255 + ... + 164666.

Almost surely, 2^556021226 is an apocalyptic number.

556021226 is a deficient number, since it is larger than the sum of its proper divisors (278990938).

556021226 is a wasteful number, since it uses less digits than its factorization.

556021226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326776.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 556021226 is about 23580.1023322631. The cubic root of 556021226 is about 822.3003157124.

The spelling of 556021226 in words is "five hundred fifty-six million, twenty-one thousand, two hundred twenty-six".