36000561 has 8 divisors (see below), whose sum is σ = 48814560. Its totient is φ = 23593472.

The previous prime is 36000551. The next prime is 36000599. The reversal of 36000561 is 16500063.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36000561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36000521) 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 7 ways as a sum of consecutive naturals, for example, 101520 + ... + 101873.

It is an arithmetic number, because the mean of its divisors is an integer number (6101820).

Almost surely, 2^36000561 is an apocalyptic number.

It is an amenable number.

36000561 is a deficient number, since it is larger than the sum of its proper divisors (12813999).

36000561 is a wasteful number, since it uses less digits than its factorization.

36000561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203455.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 36000561 is about 6000.0467498179. The cubic root of 36000561 is about 330.1944400483.

The spelling of 36000561 in words is "thirty-six million, five hundred sixty-one", and thus it is an aban number.