561546536 has 32 divisors (see below), whose sum is σ = 1068528000. Its totient is φ = 276621696.

The previous prime is 561546509. The next prime is 561546563. The reversal of 561546536 is 635645165.

It is an interprime number because it is at equal distance from previous prime (561546509) and next prime (561546563).

It is a junction number, because it is equal to n+sod(n) for n = 561546493 and 561546502.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 496820 + ... + 497948.

It is an arithmetic number, because the mean of its divisors is an integer number (33391500).

Almost surely, 2^561546536 is an apocalyptic number.

It is an amenable number.

561546536 is a deficient number, since it is larger than the sum of its proper divisors (506981464).

561546536 is a wasteful number, since it uses less digits than its factorization.

561546536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001 (or 1997 counting only the distinct ones).

The product of its digits is 324000, while the sum is 41.

The square root of 561546536 is about 23696.9731400447. The cubic root of 561546536 is about 825.0151382591.

The spelling of 561546536 in words is "five hundred sixty-one million, five hundred forty-six thousand, five hundred thirty-six".