561126312 has 128 divisors (see below), whose sum is σ = 1628467200. Its totient is φ = 178848000.

The previous prime is 561126299. The next prime is 561126341. The reversal of 561126312 is 213621165.

It is a super-3 number, since 3×561126312³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 486937 + ... + 488087.

It is an arithmetic number, because the mean of its divisors is an integer number (12722400).

Almost surely, 2^561126312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561126312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (814233600).

561126312 is an abundant number, since it is smaller than the sum of its proper divisors (1067340888).

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

561126312 is a wasteful number, since it uses less digits than its factorization.

561126312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1254 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 561126312 is about 23688.1048629898. The cubic root of 561126312 is about 824.8092914560.

Adding to 561126312 its reverse (213621165), we get a palindrome (774747477).

The spelling of 561126312 in words is "five hundred sixty-one million, one hundred twenty-six thousand, three hundred twelve".