555557226 has 64 divisors (see below), whose sum is σ = 1394841600. Its totient is φ = 143833536.

The previous prime is 555557213. The next prime is 555557227. The reversal of 555557226 is 622755555.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (555557227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3220 + ... + 33488.

It is an arithmetic number, because the mean of its divisors is an integer number (21794400).

Almost surely, 2^555557226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555557226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697420800).

555557226 is an abundant number, since it is smaller than the sum of its proper divisors (839284374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555557226 is a wasteful number, since it uses less digits than its factorization.

555557226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30323.

The product of its digits is 525000, while the sum is 42.

The square root of 555557226 is about 23570.2614750028. The cubic root of 555557226 is about 822.0715153767.

The spelling of 555557226 in words is "five hundred fifty-five million, five hundred fifty-seven thousand, two hundred twenty-six".