561022163 has 4 divisors (see below), whose sum is σ = 604177728. Its totient is φ = 517866600.

The previous prime is 561022153. The next prime is 561022169. The reversal of 561022163 is 361220165.

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

It is a cyclic number.

It is not a de Polignac number, because 561022163 - 2¹⁴ = 561005779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561022169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21577763 + ... + 21577788.

It is an arithmetic number, because the mean of its divisors is an integer number (151044432).

Almost surely, 2^561022163 is an apocalyptic number.

561022163 is a deficient number, since it is larger than the sum of its proper divisors (43155565).

561022163 is a wasteful number, since it uses less digits than its factorization.

561022163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43155564.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 561022163 is about 23685.9064213300. The cubic root of 561022163 is about 824.7582581585.

The spelling of 561022163 in words is "five hundred sixty-one million, twenty-two thousand, one hundred sixty-three".