561352163 has 4 divisors (see below), whose sum is σ = 566802288. Its totient is φ = 555902040.

The previous prime is 561352151. The next prime is 561352171. The reversal of 561352163 is 361253165.

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 561352163 - 2⁸ = 561351907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561351163) 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, 2724908 + ... + 2725113.

It is an arithmetic number, because the mean of its divisors is an integer number (141700572).

Almost surely, 2^561352163 is an apocalyptic number.

561352163 is a deficient number, since it is larger than the sum of its proper divisors (5450125).

561352163 is a wasteful number, since it uses less digits than its factorization.

561352163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450124.

The product of its digits is 16200, while the sum is 32.

The square root of 561352163 is about 23692.8715650932. The cubic root of 561352163 is about 824.9199373790.

The spelling of 561352163 in words is "five hundred sixty-one million, three hundred fifty-two thousand, one hundred sixty-three".