561005853 has 12 divisors (see below), whose sum is σ = 772919424. Its totient is φ = 361937400.

The previous prime is 561005849. The next prime is 561005873. The reversal of 561005853 is 358500165.

It is not a de Polignac number, because 561005853 - 2² = 561005849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561005843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94413 + ... + 100178.

It is an arithmetic number, because the mean of its divisors is an integer number (64409952).

Almost surely, 2^561005853 is an apocalyptic number.

It is an amenable number.

561005853 is a deficient number, since it is larger than the sum of its proper divisors (211913571).

561005853 is a wasteful number, since it uses less digits than its factorization.

561005853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194656 (or 194625 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 561005853 is about 23685.5621212586. The cubic root of 561005853 is about 824.7502656414.

The spelling of 561005853 in words is "five hundred sixty-one million, five thousand, eight hundred fifty-three".