561000506 has 8 divisors (see below), whose sum is σ = 918000864.
Its totient is φ = 255000220.
The previous prime is 561000467. The next prime is 561000509. The reversal of 561000506 is 605000165.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not an unprimeable number, because it can be changed into a prime (561000509) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12749990 + ... + 12750033.
It is an arithmetic number, because the mean of its divisors is an integer number (114750108).
Almost surely, 2561000506 is an apocalyptic number.
561000506 is a deficient number, since it is larger than the sum of its proper divisors (357000358).
561000506 is a wasteful number, since it uses less digits than its factorization.
561000506 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 25500036.
The product of its (nonzero) digits is 900, while the sum is 23.
The square root of 561000506 is about 23685.4492463200.
The cubic root of 561000506 is about 824.7476453755.
The spelling of 561000506 in words is "five hundred sixty-one million, five hundred six", and thus it is an aban number.