561055585 has 4 divisors (see below), whose sum is σ = 673266708. Its totient is φ = 448844464.

The previous prime is 561055571. The next prime is 561055597. The reversal of 561055585 is 585550165.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356794321 + 204261264 = 18889^2 + 14292^2 .

It is a cyclic number.

It is not a de Polignac number, because 561055585 - 2⁵ = 561055553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56105554 + ... + 56105563.

It is an arithmetic number, because the mean of its divisors is an integer number (168316677).

Almost surely, 2^561055585 is an apocalyptic number.

It is an amenable number.

561055585 is a deficient number, since it is larger than the sum of its proper divisors (112211123).

561055585 is a wasteful number, since it uses less digits than its factorization.

561055585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112211122.

The product of its (nonzero) digits is 150000, while the sum is 40.

The square root of 561055585 is about 23686.6119358595. The cubic root of 561055585 is about 824.7746357189.

The spelling of 561055585 in words is "five hundred sixty-one million, fifty-five thousand, five hundred eighty-five".