561585 has 16 divisors (see below), whose sum is σ = 930240. Its totient is φ = 288960.

The previous prime is 561559. The next prime is 561599. The reversal of 561585 is 585165.

It is a happy number.

It is not a de Polignac number, because 561585 - 2⁵ = 561553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211 + ... + 1080.

It is an arithmetic number, because the mean of its divisors is an integer number (58140).

2⁵⁶¹⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

561585 is a deficient number, since it is larger than the sum of its proper divisors (368655).

561585 is a wasteful number, since it uses less digits than its factorization.

561585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328.

The product of its digits is 6000, while the sum is 30.

The square root of 561585 is about 749.3897517314. The cubic root of 561585 is about 82.5033974726.

The spelling of 561585 in words is "five hundred sixty-one thousand, five hundred eighty-five".