561204012 has 24 divisors (see below), whose sum is σ = 1344868336. Its totient is φ = 182011968.

The previous prime is 561204011. The next prime is 561204037. The reversal of 561204012 is 210402165.

It is a super-2 number, since 2×561204012² = 629899886169792288, 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 561204012.

It is not an unprimeable number, because it can be changed into a prime (561204011) 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, 631543 + ... + 632430.

Almost surely, 2^561204012 is an apocalyptic number.

It is an amenable number.

561204012 is an abundant number, since it is smaller than the sum of its proper divisors (783664324).

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

561204012 is a wasteful number, since it uses less digits than its factorization.

561204012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264017 (or 1264015 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 561204012 is about 23689.7448698799. The cubic root of 561204012 is about 824.8473605578.

Adding to 561204012 its reverse (210402165), we get a palindrome (771606177).

The spelling of 561204012 in words is "five hundred sixty-one million, two hundred four thousand, twelve".