561577085 has 8 divisors (see below), whose sum is σ = 703192320. Its totient is φ = 429728464.

The previous prime is 561577067. The next prime is 561577139. The reversal of 561577085 is 580775165.

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

It is a cyclic number.

It is not a de Polignac number, because 561577085 - 2²⁰ = 560528509 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2441525 + ... + 2441754.

It is an arithmetic number, because the mean of its divisors is an integer number (87899040).

Almost surely, 2^561577085 is an apocalyptic number.

It is an amenable number.

561577085 is a deficient number, since it is larger than the sum of its proper divisors (141615235).

561577085 is a wasteful number, since it uses less digits than its factorization.

561577085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4883307.

The product of its (nonzero) digits is 294000, while the sum is 44.

The square root of 561577085 is about 23697.6177072718. The cubic root of 561577085 is about 825.0300986876.

The spelling of 561577085 in words is "five hundred sixty-one million, five hundred seventy-seven thousand, eighty-five".