555663226 has 4 divisors (see below), whose sum is σ = 833494842. Its totient is φ = 277831612.

The previous prime is 555663221. The next prime is 555663259. The reversal of 555663226 is 622366555.

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

It can be written as a sum of positive squares in only one way, i.e., 530150625 + 25512601 = 23025^2 + 5051^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (555663221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138915805 + ... + 138915808.

Almost surely, 2^555663226 is an apocalyptic number.

555663226 is a deficient number, since it is larger than the sum of its proper divisors (277831616).

555663226 is a wasteful number, since it uses less digits than its factorization.

555663226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277831615.

The product of its digits is 324000, while the sum is 40.

The square root of 555663226 is about 23572.5099639389. The cubic root of 555663226 is about 822.1237956430.

The spelling of 555663226 in words is "five hundred fifty-five million, six hundred sixty-three thousand, two hundred twenty-six".