561246312 has 32 divisors (see below), whose sum is σ = 1530672480. Its totient is φ = 170074560.

The previous prime is 561246311. The next prime is 561246353. The reversal of 561246312 is 213642165.

It is a self number, because there is not a number n which added to its sum of digits gives 561246312.

It is not an unprimeable number, because it can be changed into a prime (561246311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1062703 + ... + 1063230.

It is an arithmetic number, because the mean of its divisors is an integer number (47833515).

Almost surely, 2^561246312 is an apocalyptic number.

It is an amenable number.

561246312 is an abundant number, since it is smaller than the sum of its proper divisors (969426168).

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

561246312 is a wasteful number, since it uses less digits than its factorization.

561246312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125953 (or 2125949 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 561246312 is about 23690.6376444367. The cubic root of 561246312 is about 824.8680839585.

Adding to 561246312 its reverse (213642165), we get a palindrome (774888477).

The spelling of 561246312 in words is "five hundred sixty-one million, two hundred forty-six thousand, three hundred twelve".