561331122 has 32 divisors (see below), whose sum is σ = 1226352960. Its totient is φ = 169873920.

The previous prime is 561331093. The next prime is 561331153. The reversal of 561331122 is 221133165.

It is a junction number, because it is equal to n+sod(n) for n = 561331092 and 561331101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48138 + ... + 58650.

It is an arithmetic number, because the mean of its divisors is an integer number (38323530).

Almost surely, 2^561331122 is an apocalyptic number.

561331122 is an abundant number, since it is smaller than the sum of its proper divisors (665021838).

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

561331122 is a wasteful number, since it uses less digits than its factorization.

561331122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11338.

The product of its digits is 1080, while the sum is 24.

The square root of 561331122 is about 23692.4275244222. The cubic root of 561331122 is about 824.9096305054.

Adding to 561331122 its reverse (221133165), we get a palindrome (782464287).

The spelling of 561331122 in words is "five hundred sixty-one million, three hundred thirty-one thousand, one hundred twenty-two".