561561063 has 32 divisors (see below), whose sum is σ = 885338112. Its totient is φ = 309830400.

The previous prime is 561561061. The next prime is 561561067. The reversal of 561561063 is 360165165.

It is not a de Polignac number, because 561561063 - 2¹ = 561561061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561561061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424443 + ... + 425763.

It is an arithmetic number, because the mean of its divisors is an integer number (27666816).

Almost surely, 2^561561063 is an apocalyptic number.

561561063 is a deficient number, since it is larger than the sum of its proper divisors (323777049).

561561063 is a wasteful number, since it uses less digits than its factorization.

561561063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 561561063 is about 23697.2796540025. The cubic root of 561561063 is about 825.0222524760.

The spelling of 561561063 in words is "five hundred sixty-one million, five hundred sixty-one thousand, sixty-three".