561122226 has 36 divisors (see below), whose sum is σ = 1414259262. Its totient is φ = 160320384.

The previous prime is 561122207. The next prime is 561122257. The reversal of 561122226 is 622221165.

561122226 is a `hidden beast` number, since 5 + 611 + 2 + 22 + 26 = 666.

It can be written as a sum of positive squares in only one way, i.e., 385533225 + 175589001 = 19635^2 + 13251^2 .

It is a super-2 number, since 2×561122226² = 629716305022390152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561122226.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 317215 + ... + 318978.

Almost surely, 2^561122226 is an apocalyptic number.

561122226 is an abundant number, since it is smaller than the sum of its proper divisors (853137036).

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

561122226 is a wasteful number, since it uses less digits than its factorization.

561122226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636215 (or 636205 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 561122226 is about 23688.0186170140. The cubic root of 561122226 is about 824.8072894238.

The spelling of 561122226 in words is "five hundred sixty-one million, one hundred twenty-two thousand, two hundred twenty-six".